Let's Unmix is a fully automatic music source separator.
It separates your music file into Vocal, Drums , Bass and other instruments.

Separate music into vocals, drums(percussion), bass and other instruments.

Separated tracks can be saved and exported to other apps such as DAW.

You can control volumes and panning of each track separately for playback and export. Playback speed also can be adjusted

You can cut specific region of the tracks for playback and export by defining the area of the waveform view.

Source music can be imported from Media Library, other apps or cloud services such as iCloud, DropBox , Google Drive and so forth.

The supported file format as source music are mp3, m4a and wav. The supported output formats are m4a and wav.

The optimal sampling rate of the source file is 44.1KHz(CD quality). The sampling rate of output file is always 44.1KHz regardless of the sampling rate of the source file.

What’s New

Version 2.0

The new features of this version (2.0)
- improve usability of Mute/Solo buttons
- stepper for playback speed control for finer change
- bug fix
The new features of this version (1.9)
- bug fix
The new features of this version (1.8)
- transpose feature to shift pitch of the sound
- mute, solo button for each track
- faster extraction
- show a dialogue to ask user permission to track device’s advertising identifier to conform new tracking policy on iOS 14.5 or later version
- bug fix
The new features of this version (1.6)
- bug fix
The new features of this version (1.5)
- support video file
MPEG4 (AAC audio encoding) and QuickTime movie formats are supported
Audio track are extracted from those video files and imported in the app folder
Video files can be imported from Camera Roll as well as Cloud Storage such as iCloud

- The app folder can be accessed from File App for better import/export operations

- Fix to audio cut out issue on certain devices on iOS 14.X

The new features of this version (1.4)
- fix for the issue bellow
- volume of loaded song is lower than expected

The new features of this version (1.3)
- iOS 14 support
- bug fix

The new features of this version (1.2)
- minor bug fixes

The new features of this version (1.1)
- minor bug fixes

Ratings and Reviews

4.6 out of 5
50 Ratings

50 Ratings

takamine523 ,

Issues on SE 2 *update below*

I purchased the full version of Let’s Unmix. I have an iPhone SE 2. I am impressed with the algorithm to remove vocals and separate tracks. However for some reason most of the songs I am trying to use, once they are loaded and have been “unmixed” they have blank spots throughout playback of the song. To put it simply, on average of every 30 seconds there are 5 to 10 sec places of silence. I’ve uninstalled the app, reloaded it. I don’t know what else to try. In the demo, I thought it was being caused by a glitch in the advertisements that pop up. But even after buying, it is still doing it. It makes it unusable. Unless you can tell me how to fix this, I would like a refund. 1 star for now, but if this is fixed it is easily a 5 star app. All my music plays with no issue in other apps.
I contact the dev and they immediately responded and asked for more details of the problem. After several responses back and forth, they figured out the issue and did an update. It is working perfectly now!!!! This app is exactly what I was hoping for and does what it advertises. I am especially impressed with the dev response to the issue and would purchase from them again.

Sent from my iPhone

inkhursion ,

Was not expecting that. Thoroughly impressed

Like another comment said, I don’t often write reviews for apps, and when I do, it’s mostly only for if I think an app is garbage. But this app actually motivated me to come write a good review. I honestly didn’t really expect this to work tbh, but I said screw it, it’s free to try... and my mind was blown! This dev deserved every bit of my 5 bucks for the full features (export, full song length, etc). Honestly after hearing how well it worked, I would have easily paid more. I’ve been wanting something that does this since I was a little kid but didn’t think it was really ever possible. So here I am, smiling like a little girl on her birthday, plugging in all my favorite songs. And it just works, all you do is load in the song and tap a few buttons. In a world of subpar subscription service apps, this is quality app development, many thanks to the devs!

Espiriguidiberto ,

I’m speechless

Seriously. I rarely write app reviews, but I’ve been working on a remix and I was struggling with the vocal samples, as I didn’t have the a cappella version of the song. I tried Audacity, EQ, etc. Never got to a place I liked. Then someone put this app on reddit and I decided to check out, but I wasn’t confidently it would be better than what I had done before. Being free also lowered the barrier to try it out. And boy it was worth it! I still can’t believe what this app has done with the song. It really feels like magic and the vocals are perfectly isolated. I bought it in a heartbeat. It solved my issue in 3 seconds. Congrats developers!

App Privacy

The developer, Hikaru Tsuyumine, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Data Linked to You

The following data may be collected and linked to your identity:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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