Tempo SlowMo : Practice At Your Own Pace

Slow Down Track Tempo
Slow Down Track Tempo
Release Date: 1st Sept 2011
Platforms: iOS 5.1+, Android 2.3.3+
Category: Music / Education
Price: FREE
Rating: 4+
Language: English UK
Developer: Martian Storm Ltd.

Global Rating ★★★★½ 

Tempo SlowMo is an ideal practice tool for musicians, dancers, language students and fitness enthusiasts. Using technology developed for our Chord Detector and Chord Tutor apps, Tempo SlowMo’s sleek and simple design helps you practice playing songs, dance routines or learning a new language by slowing down or speeding up an audio tracks BPM (beats per minute) without affecting its pitch.

Just hit the Music button within the app to reveal the available audio import options. Import an audio file from your iPod music library, Dropbox account or over WiFi network directly to your device. Tempo SlowMo will then load the audio file which you can then play, pause, slow down and speed up to your hearts content.

Tempo SlowMo also has a feature allowing you to drop markers at any point in the track so that you can quickly skip back to that point if there is a particular bit of a track you are trying to master. Special Loop Markers allow you to loop part of a track if you need to master a specific section. Start and End Track Markers allow you to override the point where a track begins and ends.

As well as being able to import audio files from different sources you can also make your own recording and save it for future use.

Export features are now provided as of version 1.3.0. You can export the changes you made to an audio file to MP4 and upload it to Dropbox or send it as an email attachment.

Please note that DRM protected audio files are not supported by this app.

List of core features:-

  • Import tracks from iPod music library sync’d to device
  • iTunes Match supported, import tracks from the iCloud (pre iOS 6)
  • Change tempo while playing between 20% and 250% or original tempo.
  • Display BPM value if track is tagged with BPM via idv3 or iTunes metadata.
  • Plays in background
  • AirPlay support
  • Gapless playback (when Playlist option is installed)
  • Play track on continuous loop
  • loop selected sections of a track
  • Export to Dropbox or Email (not supported on iPhone 3G)
  • Import your tracks your computer over WiFi
  • Import your tracks from Dropbox
  • Input from devices microphone and slow down/speed up recording
  • Import mp3 and m4a email attachments

List of additional features available via In-App Purchase:-

  • Playlist – create, update, save and load playlists of tracks. BPM lock feature included which enables you to play an entire playlist at the same BPM.
  • Pitch Changer – alter the pitch in 0.5 semitone increaments between -12 and +12 semitones.
  • BPM Tapper – determine the BPM of your track and then alter the tempo by BPM value.
  • Balance Control – change the volume per channel.
  • Equaliser Control – isolate specific frequency bands with this 10 band equaliser.
  • Remove Adverts – The app is free but contains adverts. Use this option to remove the adverts.
Basic Feature Overview

Tempo SlowMo - feature overview

BPM Tapper Overview
Tempo SlowMo BPM Tapper - feature overview
Video (version 1.3.0):

Tempo SlowMo - alter tempo without affecting pitchTempo SlowMo - volume and AirPlay controlTempo SlowMo - optional In-App purchases, pitch control, balance control, bpm tapperTempo SlowMo - optional pitch controlTempo SlowMo - optional bpm tapperTempo SlowMo - optional balance control


Andrey 01-11-2011, 19:00

Very Good! But how to remove advert?

Simon 02-11-2011, 08:34

Hi Audrey

The ability to remove the advert is coming in the next version

Mick 11-12-2011, 03:19

Great little app. How to remove a marker?

Mick 11-12-2011, 03:23

Ignore that….I’ve worked out you have to flick it off. Again… great app for practicing the drums with AC/DC

Tina 11-12-2011, 14:38

At 100% speed and 0 semitones change in pitch (playing the song in it’s original key and speed), many songs come out much slower and at a lower pitch. How to fix this bug?

Simon 13-12-2011, 08:36

Hi Tina,

Thanks for pointing this defect out. We have managed to recreate the problem and have fixed it in v1.2.1 which is currently with Apple for review. The next version should be available on the App Store within the next 5 days.

Thanks for your support.

Sid Mitchell 15-12-2011, 19:36

I cannot get the app to go below 50% tempo, and the BPM doesn’t seem to do anything when tapped. Am I missing something here, or have these features not installed properly?

Sid Mitchell 15-12-2011, 21:32

Have figured out the BPM setting now. It is not immediately apparent that you have to keep tapping until a value appears.
Still can’t fathom out why my change of tempo is restricted, however, but I am beginning to warm to this app!

Simon 20-12-2011, 18:40

Hi Sid, thanks for the comment.

50% of the original tempo is the lowest it will go, 200% is the maximum.

Regarding the BPM Tapper, it needs at least 10 taps to determine a reasonably accurate BPM value. The first tap will set the tempo back to 100% if its not already there. So then tap at least 10 times to the beat of the music and you will see a BPM value appear to the left of the button. Once you stop tapping you will be asked if you want to use that BPM value. If you select YES then the BPM value will be used instead of the percentage tempo at the top of the page. If you want to switch between percentage value and BPM value just tap on the tempo display at the top of the page.

Hope this helps. Please let me know if you have any further problems.

Aat Vogelaar 14-08-2012, 18:46

I keep taping, but I do no see any BPM value. The first tap set the tempo back to 100%. After the first tap I keep tapping, but nothing happens. Do I something wrong or is this a bad application?

Simon 14-08-2012, 19:41

You need to tap on the BPM tapper button at least 10 times in order to generate an average BPM value. Once the value has appeared to the left of the tapper button you can stop tapping at any time. You should then be presented with the option to use that BPM value.

Doug 03-02-2012, 01:24

I can’t seem to turn off or eliminate markers. Any pointers?

Simon 03-02-2012, 09:32

Hi Doug,

To delete a marker just press and hold the marker you want to delete for about 2 seconds.

Doug 03-02-2012, 21:19

Solved that problem. What does the markers button do?

Simon 03-02-2012, 21:19

The markers allow you to quickly skip back or forward to a particular point in a track. So if you are trying to learn part of a song, you can quickly skip back to that point by touching the marker.

Soon you will be able to place loop markers, which will allow you to loop a section of a track that you are trying to learn.

Mike 06-02-2012, 14:31

What is the deal with these markers??!!!! FRUSTRATING!!! I’ve tried everything to remove markers I’ve already placed but nothing works.

Simon 06-02-2012, 19:24

Hi Mike, thanks for your message.

To remove a marker press and hold on the marker you want to delete for 2 seconds. You will see it grow and vanish.

I’m currently working on changing the markers. In the current version of the app it allows you to drop multiple markers in the same place, so if you dropped multiple markers in the same place it may look like the mark isn’t being deleted.

Sorry for any frustration caused, as I said I’m looking to revise markers in a upcoming release.

Mike 06-02-2012, 19:28

Thank you. That was exactly the problem. I guess I had several markers so when it looked like I wasn’t deleting them I guess I was but there were more in each spot than I realized.

Love this Tempo Slow app. It’s fantastic.

Shane 09-02-2012, 09:03

The balance control feature doesn’t show up in the purchase list – how do I access this feature?

Simon 09-02-2012, 09:11

Hi Shane, I got a bit ahead of myself when updating this page. The balance control is in version 1.2.2 which is currently with Apple for review. I’m expecting it to be released in the next few days.

Shane 09-02-2012, 09:30

Thanks for the quick reply! No problem, it happens. Once that feature is online, and one side of a stereo track can be isolated, this app will be way ahead of most of the competition. Well done!

Simon 14-02-2012, 12:00

Hi Shane, Tempo SlowMo v1.2.2 is available now with the optional balance control and AirPlay support. The app now also supports AirPlay, background playing and track repeat.

Tom 01-03-2012, 02:06

Using version 1.2.3 on iPhone 4s. When the app is idle it seems to chew up processor time. The only way to stop it is to delete it from the task list. any chance this can be fixed?

Simon 01-03-2012, 08:20

Hi Tom, yes we have noticed that Tempo SlowMo is using 1% to 2% of CPU while paused and in the background. We have corrected this and will be fixed in v1.2.4 maintenance release which should be available in about a week.

Tom 01-03-2012, 22:43

Many thanks Simon.

Simon 09-03-2012, 09:46

Hi Tom, Tempo SlowMo v1.2.4 should be available today. It fixes the CPU usage while idle and in background problem that you reported.

Shari 07-03-2012, 20:16

is it possible to keep the app active while usung.
If I’m playing and want to go back to a marker, I have to wake up rhw iPad.

Simon 09-03-2012, 09:42

Hi Shari, no problem I will try and get your request into the v1.2.5 update.

Tom 10-03-2012, 23:33

After pressing the top right icon to browse the ipod tracks, I’ve noticed that the ‘albums’ button shows only the albums from my ‘classical’ genre. I have my tracks categorised into 7 genres, and ‘classical’ is the first alphabetically. Is this a bug?

Simon 12-03-2012, 08:27

Hi Tom, thanks for letting me know, yes that does sound like a bug. I will try and recreate the problem and fix it in the next version. I will keep you posted.

RP 11-03-2012, 23:05

Can you tell me why some songs will not load? The app says “LOADING” and nothing happens. Some songs work, while others imported via iTunes from the same CD do not.

Simon 12-03-2012, 08:24

Hi, thanks for your message and sorry you are having problems. That sounds strange, would you be able to email me one of the tracks you are having problem with. I will then be able to debug the problem and fix it in the next release. Please email the track file to feedback@chord-detector.com

Shane 23-03-2012, 23:40

A really useful feature would be the abilty to loop a section of a track, in addition to the current repeat function.


Domi 30-04-2012, 09:32

Hello Simon,
Thanks for your app which have a very good quality timestretch…
I can’t find the Dropbox and wifi import functions… Are they available yet ?

Simon 30-04-2012, 11:12

Hi Domi, thanks for your message. To see the Dropbox and WiFi import options just press and hold the iPod button for 2-3 seconds and the options will appear. Not obvious I know but this will improve in v1.3 when its finally ready.

Domi 30-04-2012, 11:53

Great !
(sorry, i just realize that tip is already mentioned on the Appstore in your app notes…)

I’m going to leave a very positive 🙂 evaluation on the Appstore…

By the way, i love the design, orange and dark ; the tempo wheel, very effective (not too slow and not too fast for adjusting tempo to the precise tempo wanted)…

I was going to ask you to put a “Return to original tempo” function, and i found it : just clic once on “Tap” button !

Maybe 2 ideas for the future :
– let the timestretch go below 50% (even if the sound quality becomes bad… at least user would have the choice)
– create a little help text within the app, with all the tips

In order to support your fine work (both on technical/musical and design fields), i just have bought the 2.39 € adverts remove option…and all the musical options 🙂

Have a nice musical day 😉

Domi 30-04-2012, 12:25

…and another idea :
– 1 clic on the right part of the tempo wheel automatically set the tempo to the next round 10 up value (for example : tempo start value is 82 – one right clic sets it to 90 – another right clic sets to 100… etc.
– and 1 clic on the left part of the tempo wheel would set the tempo to the next round 10 down value (tempo start value is 82 – one left clic sets it to 80 – another left clic sets to 70… etc.

It would offer the possibility to quickly go to round 10 values, without taking space on the app screen…
Other solution would be to add 2 buttons : -10 and +10

Top of the top would be to allow user choose in Settings his own convenient decrement/increment value : -/+ 10, -/+5, -/+2 bpm…

Simon 01-05-2012, 07:26

Thanks Domi for all your great feature suggestions, App Store feedback and in-app purchases. I will review the feature suggestions for v1.4 as I’m just finalising the development of v1.3 and trying to get it out the door as soon as possible.

Helmut 18-07-2012, 03:53

Hi, I use your app for walking excercise. Setting my favorite music to the pase of my steps. It works great.
However, I have a problem with using a ‘Playlist’. I understand (I’m 63) a playlist is a selection of my favorite songs, created in iTunes. If I select this playlist in TEMPO I get the list and can only play one at the time.
It should play the whole list? What is the problem?

Simon 18-07-2012, 12:40

Hi Helmut, thanks for your message. Unfortunately Tempo SlowMo doesn’t currently support playlists created in iTunes. However in the next version playlists will be supported. The next version should be available within the next few weeks.

Thanks for your support.

Mitchell 23-07-2012, 05:58

Can you tell me how to use the markers? I would like to set the parameters for starting and ending a song and have it repeat between the start and stop. Thanks in advance, Mitchell

Simon 23-07-2012, 07:23

Hi Mitchell. The markers at the moment are pretty basic, they only allow you to skip to that position and unfortunately don’t allow looping. The marker system is my next area of attack and I will definitely be implementing looping as part of that update.

Bev Neilson 15-08-2012, 02:28

I am trying to load a song to play and to slow down. I’m loading it from my itunes library by spelling it and ssearching it and finding it. I touch the tune, and the tempo’slomo says it’s loading, but nothing seems to be happening. How long should I expect it to take?

Simon 15-08-2012, 07:44

Hi Bev, Thanks for your message. Do you use iTunes Match? Is the track you are attempting to load actually on your device or is it an iCloud track? If its an iCloud track then Tempo SlowMo will have to download which can take some time depending you connection speed, whether you are on mobile network or wifi. Does the track load ok from within your devices iPod music player? Sorry for all the questions but it will help me understand the problem you are experiencing.

Bev 15-08-2012, 16:42

I can use the track in my iPod, so I think it is IN the device. It is listed, along with some other tracks I can’t seem to download with a number at the beginning of the track name. I am clicking on the track, so I’m not mistyping the name, though. When I search for the track name for Tempo-Slomo, I am typing the name, without the number, and then clicking on the item the search has found. I don’t use iTunes Match, that I know of, anyway.

Simon 17-08-2012, 12:45

Hi Bev, so it sounds like you are only having problems with tracks that have names starting with a number? Can you confirm that tracks not beginning with a number are working ok within Tempo SlowMo?

Bev Neilson 18-08-2012, 16:49

I’ve just tested a bunch of unnumbered songs from the playlist, and some numbered ones. All the unnumbered ones work and some of the numbered ones work. The numbered ones that don’t work, I’ve loaded from a CD and maybe I’ve done something weird when bringing them into my iPod. I think I used Dropbox to get them from the computer in my home that has a disc reader to the small laptop that sincs with my iPod. As I said before, these tracks play directly on my iPod, and I just double checked that – it is the case for both CD uploaded tracks. Unfortunately, both sets of tracks are ones which I would like to slow down to play along with on my accordion!

Simon 18-08-2012, 17:34

Hi Bev, thanks for the information, looks like we are starting to narrow down the problem. Would you be able to email me one of the tracks that you are having problems with? I can then test it and find out why Tempo SlowMo is objecting and hopefully fix. Please email a problem track to me at feedback@chord-detector.com

Bev Neilson 20-08-2012, 05:08

I was going to try to reload the tracks to see if I goofed that up somehow, but as I was preparing, I noticed that the tracks I’m trying to use are in aiff format. Does this make a difference? Do I have to convert them to MP3 to use them with SlowMo? If so, could you direct me what to use to do it?

Bev Neilson 06-10-2012, 17:29

I finally got around to trying to convert an aiff track to MP3, and now SloMo works perfectly. It seemed to try forever to load the aiff file, but now it happens instantly in MP3. Thanks for you help with this problem.

Simon 07-10-2012, 15:17

Hi Bev, I’m glad that worked for you, unfortunately I haven’t had time yet to look at the problematic files you kindly provided. At least we have a workaround for the time being.

Erik 09-09-2012, 05:28

Hi, great app! Especially the latest version. I really like being able to save and export via Dropbox.
I have 2 questions: Is it possible to activate “play” from the markers page? Also, how do I delete a track that I’ve recorded with the recording feature?


Simon 09-09-2012, 11:57

Hi Erik, You are not the first person to ask about being able to play/pause the track from the markers view. In the current version the answer is no. However I have added a play/pause button on this view in v1.3.1 which is currently with apple for review. Hopefully it will be available within the next week. Regarding your second question, you can delete a recording by swiping your finger from right to left over the recording you wish to delete and a delete button should be revealed. Hope this helps. If you are able to leave feedback via the App Store that would be much appreciated.

Beth 10-09-2012, 00:18

I select a song from my ipod and it indicates that it is loading, however, it then cuts out to the main ipod menu screen , then I have to click on the app icon again to open it. The song that was supposedly loaded is not anywhere to be found. What am i doing wrong??

Simon 10-09-2012, 07:40

Hi Beth, You aren’t doing anything wrong. Unfortunately there is a bug in the latest release of Tempo SlowMo affecting older iOS versions, causing the issue you are seeing. I submitted a fix to Apple for review a couple of days ago, so with any luck the fix should be available within the next few days. Sorry for any inconvenience caused by this issue. For information could you please let me know what type of device you have and the version of iOS you are running?

Matt 23-09-2012, 21:06

Great app! Hands down the best of its type! FAR clearer at very slow settings and the best UI!

I wonder if you could set the dial on the track time page to allow finer control like the speed dial has. Perhaps a toggle to switch from how it is now to a finer-tuning setting, even? Thanks!

Simon 24-09-2012, 07:24

Matt, thanks for your message, glad you like the app. I agree, finer position control would be a good addition to the app and it is something I’m definitely going to look into for a future release. Any other suggestion are gratefully received.

Michael 10-11-2012, 11:49

Hi Simon,
I am witnessing the same issue like Beth in her mail from 10-09-2012.
I just downloaded the newest version of Tempo Slowmo.
My iPod touch has the software version 4.2.1. Because it’s an old iPod, I#m not able to get any update.
Could you tell me if the fix you mentioned in your answer to Beth is already done, or is my iPod just too old fpr the use of it?
Thank you for your time and support.
All the best.

Simon 20-11-2012, 10:55

Hi Michael, sorry for the delay replying I have been very busy moving house. The issue you are experiencing is slightly different to Beth’s issue which was fixed by an earlier release. I detected the issue you are experiencing a few days ago and submitted a fix to Apple yesterday. So hopefully within the week you should have an update containing a fix. Sorry for any inconvenience caused and thanks for your support.

Simon 28-11-2012, 09:20

Hi Michael, just wanted to let you know that v1.3.3 of Tempo SlowMo containing the fix you need is now available for download. Please let me know how you get on?

Michael 21-03-2013, 20:23

Hi Simon,
Thank you very much for your answer and the update.
Sorry for the delay of my answer. But meanwhile, my iPod broke down. So it took me a while to let it be fixed. Thank you very much for the update. Now it’s working perfectly!!
Ii got another question: I got myself an iPad 2, and I’m using Tempo SlowMo on it as well. I did a recording yesterday, and can’t find a way to delete it. I tried to find some kind of user manual, but did not find none. Maybe you can tell me where to search.
Thank you very much for your time and support, and of course for your great app, which is definately the best working on the market.
All the best.

Michael 21-03-2013, 20:27

Just found the answer to my question a few comments further down.
Sorry for not checking proper before writing to you.

Markus 22-11-2012, 16:55

I use The tap Tool. After 10 taps i get a bpm number. Ok
But there is no Chance to Rallye change The Speed of The Song.
I can Flip Switch The Top 100% to my bp, but dort get any result on Speed changing.
What to do ?


Simon 22-11-2012, 17:48

Hi Markus. The BPM tapper will enable you to determine the original BPM of a track. After 10 or so taps it will give you a BPM value and ask if you want to accept it. If you press “yes” the tempo readout at the top of the screen will change from a percentage tempo to the BPM value. If you now turn the tempo wheel you will see the BPM value change as you speed up or slow down the track. Hope that clears things up?

Markus 22-11-2012, 22:43

But Wehre is The Tempo Wheel ??
Sorry … Maybe its just in Front of my eyes and i Don t find it .. 🙂
Regards m

Simon 23-11-2012, 09:30

Hi Markus,

Check out the basic feature overview:-


It shows the 2 core screens which you can reach by swiping left and right. On the right screenshot you will see the Tempo Wheel. The wheel has a white highlight on it. Press this highlight and you can then drag the wheel around which will adjust the tempo.

Hope this helps, let me know if you need any more info.

Jean-Francois 15-12-2012, 01:52

How do you delete a recorded track in the saved recordings?

Simon 05-01-2013, 14:41

Hi, to delete a recorded track just swipe your finger from right to left over the recording you want to delete from the list of recordings and a delete button will appear.

Lea 02-01-2013, 03:01

I’ve imported a song, used loop markers to isolate the area I want to work on and slowed the tempo to fit my needs.

Is it possible to store this so I can come back to it again in the event I make changes to these settings?

Thanks for any help you can offer.

Simon 05-01-2013, 14:40

Hi Lea, thanks for your comment. Only the current settings are stored against each track, there is currently no mechanism within the app to save the state and come back to it. Its an interesting idea though I will look into it and see if I can implement something like this in a future release.

Brendon 09-03-2013, 07:26

Hi. Love this app. I’d also love to save the markers for a track. Is it possible if you unlock the play lost.

Simon 26-03-2013, 14:30

Hi Brendon, any markers placed should get saved for each track loaded into Tempo SlowMo. Sorry for the late response.

Eh 18-01-2013, 04:39

I cannot remove the tracks imported via wifi and thats bad

Simon 18-01-2013, 16:07

If you swipe left over the track you want to delete it should reveal a delete button.

Katja 13-02-2013, 19:14

Hi, currently I’m listening to music using the playlist in your app which is pointed to music app from apple. I like to listen to them only onetime and would remove them. I cannot remove them in the playlist of your app but need to switch to the music app.
It sounds that your inapp feature for paylist is more for track stuff? When buying your playlist feature will I be able to load or copy music into an own, new playlist and delete those which I’m already listen to?
btw I am SquareDance, therefore listening once is often enough. The app is really great to learn new level i.e. using stop, rewind, slow down, …

Simon 13-02-2013, 20:59

Hi Katja, thanks for getting in contact. Forgive me I’m not sure I completely understand your question. The playlist add-on will allow you to create a playlist in the app from tracks imported from your iPod music library, Dropbox etc. The playlist add-on essentially allows you to queue up tracks to be played sequentially, rather than loading and playing one track at a time as you do in the core product. I’m not sure what you mean when you refer to deleting tracks. The app won’t remove tracks from your iPod library or Dropbox if that’s what you mean.

Let me know if you need any further clarification.

Katja 14-02-2013, 06:01

Hi Simon, thanks for answering.
It is a pitty. Podcasts are marked after I listen to them but for music I cannot see. Of course most people are not interested to know whether they already listen to a music file.
Therefore I created in my former music app a playlist with all my SquareDance music and after listen to a file I remove/delete that from the playlist. The list is going shorter to see the remaining music.
More clear now?

Simon 18-02-2013, 20:37

Hi Katja, I think I understand your requirement now. So as I understand it you would like a track removed from a playlist once it has been listened to once, much like you see with pod cast players? This may be something I can implement but I will have to make it a feature that needs to be turned on via the settings as I’m sure most users won’t want this feature enabled by default. I will look into it and see if this is feasible.

Katja 17-02-2013, 08:44

Hi Simon, I just load some SquareDance songs by wifi. This way I can delete them after I listen to them. It solves my request. But upload information are very poor as only track name is shown. Any change to get interpret as well?

Simon 18-02-2013, 20:43

Hi Katja, it is possible to manually remove an item from the playlist. You can do this by swiping from right to left over the item you want to remove and a delete button will be revealed. I will look into the issue you mentioned about the WiFi import, I agree showing the artist name as well as the track would be helpful.

Keith hoyes 24-02-2013, 16:25

Great app, any chance of podcasts being supported in the future….

Simon 26-03-2013, 14:28

Hi Keith, that’s a good idea, I will definitely look into it and let you know. Sorry for the late response.

Jayne 11-03-2013, 17:08

HI…could you please tell me if it is possible to create more than 1 playlist…and if so how would I do it. Many thanks for your assistance. Great app!

Simon 26-03-2013, 14:32

Hi Jayne, Yes if you press the playlist button there are options to save and load playlists. So to create a new playlist first save the old one (you will be prompted to choose a name), then clear the playlist by clicking the trash icon, now you can start a new playlist. Sorry for the late response.

AJ 18-04-2013, 01:53

Great app! Im having one issue with dropbox.im using more than one dropbox account but there’s no option
to log out of dropbox. You’re stuck with the account you already signed in . I tried to unistall the from dropbox itself but the app will still look for that particular account

Simon (Admin) 22-04-2013, 11:15

Hi AJ, Thanks for the feedback, I will add a Dropbox logout button to the next Tempo SlowMo release.

Simon (Admin) 02-05-2013, 09:50

Hi again AJ, just wanted to let you know that v1.3.7 of Tempo SlowMo has been released today.

I added a Dropbox unlink option to the apps settings page.

You can access the settings page from your devices main Settings, scroll to the bottom of the Settings page and you should see Tempo Slow option in the list. Click on that to see all the settings for Tempo SlowMo.

If you switch on the Dropbox Unlink option next time you start Tempo SlowMo it will be unlinked from your Dropbox account, enabling you to select another account.

Hope this helps.

SimonM 10-08-2013, 23:30

Love SlowMo. Any plans for implementing Audiobus support in a future version? Audiobus is an App that takes the Audio output of one App and inputs to another App. This would allow me to plug my elec. guitar into Line6 MobilePOD (or similar) and play along with tracks in SloMo thru headphones.

Simon (Admin) 23-08-2013, 05:19

Hi yes I would like to integrate Tempo SlowMo with Audiobus. I just haven’t had the time to get around to it yet, but its definitely on the plan. I will let you know when I have more definite dates for this.

Robyn 22-08-2013, 23:24

How can I create more than one playlist? I have purchased the playlist option but I want to create more than one playlist. It keeps adding tracks to the same playlist.

Simon (Admin) 23-08-2013, 05:17

Hi Robyn, thanks for getting in contact.

Yes you can have more than one playlist.

Hit the Playlist button and you will see three buttons at the bottom (load, save and clear). To save your current playlist hit the save button and it will ask you to name the playlist before it is saved. Once saved to start a new playlist hit the clear button (trash can icon) and start adding new tracks. Save the second playlist and then you can load your old playlists by hitting the load button and selecting the playlist you want to load.

Hope this helps.

Sebastian 25-08-2013, 19:13

Hi Simon,

I’m impressed by your app.

One small issue, disk usage of the app increases as more songs are added to the playlist – which is ok but this diskspace is not released when i delete the playlist. Is this a known issue and will there be a fix? And since my iPhone is only 16GB, my workaround is to delete the app and re-install to release diskspace.

Apart from the minor gripe, I’m enjoying your app. Thank you.

Simon (Admin) 25-08-2013, 20:42

Hi Sebastian,

Thanks for getting in contact. Yes the app does cache the raw audio data for tracks loaded into Tempo SlowMo. You can configure the size of this cache and clear the cache by going to your devices settings. In the apps section of your devices settings screen you should find Tempo Slow in there somewhere. If you click on Tempo Slow you will see a host of configuration options, the cache settings are towards the end of the page.

Hope this help.

Sebastian 26-08-2013, 04:22

Thanks again Simon. I tried your suggestion and it works. 🙂

Is there a way to set “clearing cache on startup” as default? The option resets to off, after each restart. Anyways, like i said… very minor gripe.

Fantastic app support, truly – 5 stars !!!

Simon (Admin) 26-08-2013, 20:19

Hi Sebastian, glad it worked. Yes the current behaviour is to clear the cache the next time the app is started, it will reset to off once it has been cleared. I will look into providing an option to clear cache every time the app is started.

Sebastian 29-08-2013, 02:03

Thanks Simon. Here’s wishing you the best.
May the people buying your apps be endless. Cheers !!! 😀

CG 29-09-2013, 14:53

How do I delete songs from the import list? I have a number of songs that I don’t want on the list any longer and can’t figure out how to get them off to make room for new ones.

Simon (Admin) 01-10-2013, 18:54

Hi, swipe left on the track you want to remove and a delete button should appear.

EA 14-10-2013, 16:16

I am getting Track Load Failed errors on both my iPad and iPhone (both running iOS7) on some songs. I am not using iTunes Match and the songs I’m trying to load into Tempo are on the devices (there is no cloud symbol next to the songs). The songs were purchased via iTunes. Any suggestions of how to fix this?

Simon (Admin) 14-10-2013, 16:48

Hi, thanks for getting in contact. Would you be able to email one of the tracks you are having a problem with ?

EA 14-10-2013, 21:00

I can try. I need to be able to find it on my iPad or iPhone. What email should I send it to?

Simon (Admin) 15-10-2013, 16:20

Thanks, please email to me at feedback@chord-detector.com

Simon (Admin) 16-10-2013, 13:13

Hi Eric, thanks for sending through an example track. The track you are having trouble with is DRM protected. Unfortunately Tempo SlowMo doesn’t support DRM protected tracks. The reason for this is that apps of this type need access to the raw audio data in order to do their thing and DRM prevents this. So unfortunately you will have this problem with any of your files ending with the M4P extension.

Jack 14-01-2014, 05:20

Is it possible to delete an entire playlist? In the ‘Load Playlist’ screen I discovered that a swipe right to left on a playlist name will cause a ‘Delete’ button to appear. However, tapping the ‘Delete’ button causes the entire app to close. After reopening the app and going to the ‘Load Playlist’ screen, the unwanted playlist is still there. Thanks.

Katja 08-03-2014, 20:09

Hi Simon,
I like to store a song with the markers set by me. This seems to work only for wifi area which is fine. But wifi area looks a little bit old fashion. Very small characters, no folder, no sort or filter, only name of song without date, size, ….
Is there any plan to improve that part of your app?

Jakob 17-03-2014, 23:14

I love the app, and use it a lot. Just discovered something about the iPad version – the Master Volume control disappears when the iPad is docked and the line out jack is used.

Simon (Admin) 01-05-2014, 14:02

Hi Jakob, thanks for letting me know. I will take a look into it.

Winston 21-05-2014, 18:36

Hi there
Great app, really, got me improving my drum skills exponentially.
I’ve just purchased the pitch changer option on my iPhone, but when I click on Restore Previous Purchase on my iPad, it won’t get me the pitch changer, although I’m using the same iTunes account.
Why’s that?

Simon (Admin) 21-05-2014, 18:50

Hi Winston, glad you like the app. Try the pitch changer purchase button, don’t worry if you are using the same iTunes account then you won’t be charged again, instead it should just restore the feature.

Winston 21-05-2014, 19:39

Wow, that was fast! A 200 bpm answer from support (rare) 😉 I’ll try this tonight
Btw, I’ll keep revealing the existence of that app to as many people as possible, so keep up the good work Simon!

Jeff 18-11-2014, 21:23


Tempo slo will not respond. It has always worked in the past. I have a iPhone 4s. I tried to redownload it and that did not work. I also closed it out and that did not work. Any ideas?

JEFF 18-11-2014, 21:25

Iphone 5s I mean..

Simon (Admin) 19-11-2014, 10:19

Hi Jeff,

Thanks for getting in contact. We have detected an incompatibility in Tempo SlowMo with iOS 8.1.1. A fix is now with Apple for review and an update should be released shortly.

Sorry for any inconvenience caused.

Simon (Admin) 25-11-2014, 21:51

H Jeff, the Tempo SlowMo update to fix the freeze issue has just been released onto the App Store.

Dan 25-11-2014, 10:45

There is a annoying bug that won’t let me close a message. Fix it.

Simon (Admin) 25-11-2014, 18:25

Hi Dan, its fixed, we are just waiting on Apple to release the fix. Sorry for any inconvenience caused.

Dan 25-11-2014, 20:33

Thanks. When will it be released

Simon (Admin) 25-11-2014, 21:50

Its just been released.

Dan 26-11-2014, 19:29

I’m still having the same issue

Simon (Admin) 26-11-2014, 19:35

Hi Dan, can you confirm you are running v1.3.24? Go to you devices Settings and select Tempo Slow near the bottom. The version you are running will be listed there. If it isn’t 1.3.24 then you are not running the latest version. Please confirm which version you are running?

Dan 26-11-2014, 19:46

It is currently running V 1.3.23. I went to the App Store and I didn’t see a update…..just saying

Simon (Admin) 26-11-2014, 19:49

Ok v1.3.23 has the issue. I just checked the App Store and when I search for Tempo SlowMo the version listed is v1.3.24. Could you check also?

Dan 26-11-2014, 20:03

I have just reinstalled the app and the issue is fixed now. Thanks for your help 😉

Simon (Admin) 26-11-2014, 20:09

Awesome, again sorry for any inconvenience caused by this issue.

Winston 14-12-2014, 19:59

Is there a way to reorder tracks in the playlists?
One of my tracks also fades in with the next, but only that one track.

Winston 22-12-2014, 20:06

Anyone here?

Katja 11-01-2015, 08:14

tempo version 1.3.24 build 1
I faced the issue that I cannot start any song from ipad or dropbox. Tempo still offers both, I can select an entry, press done (resp “fertig” as I am German) but song is still the former one.
after a (not nice) while I found out that playlist is switched on. After switching that off, all works as expected. Is there any reasin behind that? Couldn’t there at least a hint or more visible that feature are reduced in that mode?

Dan 27-02-2015, 00:11

Hi. It’s dan again. I found another bug that won’t let me loop,even when I press the loop button. Just letting you know.


Laura 23-03-2015, 19:20

I use this for learning songs for my chorus practice – great tool! But I also need to know how DELETE songs from my song list (u2 is something I cannot seem to get rid of no matter what I try). HELP!! Thanks

Simon (Admin) 23-03-2015, 20:04

Hi Laura, to delete a song just swipe left on the song you want to delete to reveal the delete button.

Laura 26-03-2015, 22:33

This only seems to work when I have pressed playlists – but not from “songs”…any other tips to get them out of that location? Thanks so much – this is a great tool!! Thanks for the quick reply!

Laura 01-04-2015, 01:22

Hi Simon – still trying to delete songs from “songs” location on the Tempo Slow – when I swipe a song from that location it moves the screen to the play page where the song I swiped is ready to play. If I have the “playlists” on my screen the delete method you suggested works perfectly. I have many songs that I would like to delete in order to add newer songs. I appreciate any help! Thanks!!

Liz 08-11-2015, 11:47

Sorry not a reply but another query – can’t see how to raise a query…

I have been given a cd of music by my daughter’s dance teacher but I can’t get it to play on this app at all. Very annoying. Any tips please? Is this likely to be a copyright thing?

The cd itself works fine in either the cd player or on the laptop.

Simon (Admin) 30-01-2016, 14:34

Hi Liz, You could try importing the CD into iTunes and then syncing the tracks with your device. Once they are on the device they will be available in Tempo SlowMo.

DOUG 12-11-2016, 15:54

Since updating to IOS10 I have trouble importing songs from my library. Some work. Some don’t. Even songs that used to import will no longer work. “Track load failed due to unsupported format”?
Songs that I imported from CD’s to iTunes that used to load will not work.

Did IOS10 change the format or file type?

Love the App but this is frustrating?


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