# Let's Unmix -AI Stem Splitter — Guitar & vocal remover ,6 stem > Music source separation tool for isolating and controlling individual instrument tracks. (iPhone/iPad app by Hikaru Tsuyumine.) - Source: https://appshunter.io/ios/app/lets-unmix-ai-stem-splitter/id1500367180 (this page in markdown: same URL + `.md`) - Developer: [Hikaru Tsuyumine](https://appshunter.io/developer/1438695088) - Category: Music, Utilities - Price: Free with in-app purchases - Rating: 4.40/5 from 66 App Store ratings · 80 written reviews indexed - Age rating: 4+ - Requires: iOS 16.0 · 486 MB - Languages: American English, Japanese - Released: 2020-03-09 - Data updated: 2026-10-09 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/lets-unmix-ai-stem-splitter/id1500367180/reviews.md ## What is Let's Unmix? Effortlessly isolate and control your music—now with guitar separation! Separate any song into up to 6 individual tracks—vocals, drums, bass, piano, guitar, and other instruments—right on your device. No uploads, works fully offline. Turn any part into MIDI. Convert vocals, bass, piano, and now guitar to MIDI, then export it to your DAW or other music apps. Once separated, you can save and export these tracks to other apps, including your favorite DAWs (Digital Audio Workstations). Customize your playback by adjusting the volume and panning for each track independently, or even change the playback speed to suit your needs. With the waveform editor, it's easy to select specific regions for playback or export, giving you full control over your audio. Import your music directly from the Media Library, other apps, or cloud services like iCloud, Dropbox, Google Drive, and more. We support a wide range of audio formats, including mp3, m4a, ALAC, AIFF, FLAC, and WAV. Export your edited tracks in m4a, ALAC, AIFF, MIDI, or WAV formats. For the best experience, we recommend using music files with a 44.1kHz sample rate (CD quality). All exports are set to 44.1kHz to ensure consistent, high-quality audio output. One purchase unlocks all features forever. No subscriptions. ## Key features - Isolate vocals, drums, bass, piano, and other instruments - Adjust volume and panning of individual tracks - Change playback speed - Waveform editor for region selection - Import from Media Library, cloud services, and other apps - Export separated tracks in various formats - Supports multiple audio formats ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Premium Version | $7.99 | one-time | ## Recent user reviews (10 of 80) All indexed reviews: https://appshunter.io/ios/app/lets-unmix-ai-stem-splitter/id1500367180/reviews.md ### 5/5 — めちゃくちゃいいのですが… *2026-09-10* ファイルのサイズにもよると思うのですがアップデートしてからMIDIデータの生成を開始するとアプリが落ちてしまい解析ができなくなることが多々あります **Developer response:** ご利用いただきありがとうございます。最新のバージョン6.1.1ではMIDI関連の不具合を修正していますので、是非アップグレードをご検討ください。6.1.1でも同様の問題が発生するようであれば、お手数ですがinfo@vocalextractor.comまでご連絡いただけると助かります。 ### 5/5 — Great app *2026-08-28* I’ve been using this app since the day it was released. I don’t know why people are complaining that they had to pay extra to use more features of the app as there are no advertisements, no overpriced subscriptions, the app is always updated, it works, and it is on my top 15 must have iOS audio apps. I’ve been using iOS audio apps since 2011 (plus beta testing) and I’ve seen wonderful apps go through putrid changes, go to subscription service even after you’ve paid for them, and some have no updates (basically wasting your money without it ever working on a new device). Not this app- truly fabulous. I adore this app and appreciate the updates!! This app is fantastic and updated all the time. What more could you want? ### 1/5 — DO NOT BUY THIS - update *2026-05-13, version 4.2* Totally useless. Keeps crashing. MIDI output is corrupted and useless. Huge potential. BIG DISAPPOINTMENT! Big waste of money. I want a refund!!! ### 5/5 — 期待どうり *2025-10-19* 声が入ってない楽器だけの音源が欲しかったのですがインターネットのどこにもなく、困っていたのですがこのアプリは分けてくれるだけでなく、細かく楽器ごとに音量調節ができるのでとても素晴らしかったです。無料ですぐ使えるので本当に助かりました。 ### 1/5 — すぐ閉じてしまう *2025-10-14* 課金しましたがすぐアプリが閉じてしまう。midiもほとんど合ってない。 ### 5/5 — Let’s unmix: *2025-04-21* This has become my favorite app. I’ve been looking for an app like this forever!!!!!!! I really love it!!!!!!! Thanks!!!!!!! Would it ever be possible for you to arrange so we can also split vocals? Also really appreciate that it’s really Blind accessible!!!!!!! ### 2/5 — バックグラウンド再生の不具合 *2025-02-10* バージョン4.0にアップデートしたところ使用した曲に関わらずバックグラウンド再生が出来なくなってしまったので修正お願いします iPhone 16 Pro Max iOS 18.0.1にて **Developer response:** フィードバックありがとうございます。バージョン4.1で修正しました。アップデートし、試してみてください。 ### 5/5 — Great app *2024-12-03* I’ve been using this app since the day it was released. I don’t know why people are complaining that they had to pay an extra $4.99 to use more features of the app as there are no advertisements, no overpriced subscriptions, the app is always updated, it works, and it is on my top 15 must have iOS audio apps. I’ve been using iOS audio apps since 2011 (plus beta testing) and I’ve seen wonderful apps go through putrid changes, go to subscription service even after you’ve paid for them, and some have no updates (basically wasting your money without it ever working on a new device). Not this app- truly fabulous. I adore this app and appreciate the updates!! ### 5/5 — 最高です *2024-11-25* 好きなバンドのコピーをするときにずっと使わせていただいています。全パートを打ち込みと生楽器で再現するのが好きなので、すごく重宝しています！ピアノ分離の新機能もとてもありがたいです。 macでアプリを操作する際、再生/停止をスペースキーで制御できるといいな、と思っています。 今後更新される際はご検討いただければ幸いです。 **Developer response:** 貴重なフィードバックありがとうございます。最新バージョン3.2より、キーボードショートカットの機能を追加しました。スペースキーでの再生/停止も可能になっております。是非、ご利用ください。 ### 4/5 — 各トラックのバランスフェーダーに数値表示を！ *2024-05-26* 愛用しています。フェーダーに数値表示があれば微調整でき、バランスの再現性を目で見て的確にできるので更に便利なツールになります。欲を言えばクリップ防止のオーバーロードインジケーター表示があれば最大音量バランスをとりやすい。次回アップデートに期待！ **Developer response:** 貴重なご意見ありがとうございます。ご希望の機能実現できるよう、検討させていただきます。 ## Frequently asked questions about Let's Unmix ### What does this music app do? This application allows you to effortlessly separate any song into its individual instrument tracks, such as vocals, drums, bass, and piano. You can then gain granular control over these isolated stems, adjusting their volume, panning, and even playback speed. ### What are the key features of this music editor? Key features include the ability to isolate specific instruments, customize playback with independent track volume and panning, change playback speed, and utilize a waveform editor for precise region selection. It also supports importing and exporting a wide range of audio formats. ### How can I import music into the app? You can import your music directly from your device's Media Library. Additionally, the app supports importing from other applications and popular cloud services like iCloud, Dropbox, and Google Drive, offering flexible access to your audio files. ### What audio formats are supported for import and export? The app supports a broad spectrum of audio formats for import, including mp3, m4a, ALAC, AIFF, FLAC, and WAV. For exporting your edited tracks, you can choose from m4a, ALAC, AIFF, MIDI, or WAV formats, ensuring compatibility with various workflows. ### Is this app free to use? The application is available for free with in-app purchases. This means you can download and use the core functionalities without initial cost, with optional features or advanced capabilities potentially available through in-app purchases. ## Version history (last 5 releases) ### 7.2 — 2026-10-08 The new features of this version (7.2) - Added per-stem level meters. Each stem now shows its own L/R audio levels, so you can see exactly which parts are playing and balance your mix more easily. The new features of this version (7.1.1) - bug fix The new features of this version (7.1) - bug fix The new features of this version (7.0) - Guitar can now be separated as its own stem (powered by a high-quality model) - Convert guitar to MIDI, with instrument (sound) selection - Bug fixes and stability improvements The new features of this version (6.1.1) - bug fix The new features of this version (6.1) - On iPhone, the faders for each part are now shown in a horizontally scrolling rack, making them easy to view and control even with many parts. (On iPad, the larger screen shows all parts at once, with no scrolling needed.) - Added a master fader to adjust the overall volume and left/right pan in one place. - Added stereo L/R level meters to monitor the output while playing. - Improved stability and fixed several issues. The new features of this version (6.0) - New high-performance separation model for cleaner results across vocals, drums, bass, piano, and other. - Choose your separation model — high-performance or standard — in Settings, with smarter defaults based on your device. - Performance improvements, bug fixes, and stability enhancements. The new features of this version (5.0) - UI improvements - bug fix The new features of this version (4.2) - bug fix The new features of this version (4.1) - bug fix The new features of this version (4.0) - playback transcribed MIDI files - bug fix The new features of this version (3.3) - bug fix The new features of this version (3.2) - Keyboard Shortcut Feature Added - SPACE: Start/Stop - Left Arrow Key: Rewind 10 seconds - Right Arrow Key: Fast-forward 10 seconds - "R" or "r": Restart The new features of this version (3.1) - Enhanced MIDI Export - Now you can save and export piano, drums, and accompaniment tracks in addition to bass and vocals. - Set Program Change for each track to customize the instrument during playback. - Set Tempo functionality for more precise control. - bug fix The new features of this version (3.0) - Piano sound separation in addition to Vocals, Drums, Bass and Other Instruments - AIFF,ALAC Support - New UI layout for better usability - easier file operations such as Load,Save,Export - Bug Fix The new features of this version (2.6) - Transcribes vocal and base tracks and export as MIDI format * MIDI playback is not supported on 2.6 - Supports FLAC format for input file - bug fix The new features of this version (2.5) - Unload feature which enables to unload separated tracks from players, remove those files and reset UI to the initial position - Support longer than 20min source songs. Max length is still limited by the available memory and storage size on the device - bug fix The new features of this version (2.4) - smooth volume faders - change the default behavior of the source track to turn down source volume to zero when separation has completed ( can be configured) - bug fix The new features of this version (2.3) - mute source track automatically after separation as a default for better usability - bug fix The new features of this version (2.2) - saves and exports Native Instruments Stem File format so that you can export all stems directly into DJ apps that support Stem format. * - On app restart, restores and reloads tracks separated just before restart. * * Monaural sound source is not supported - reduces power consumption in the background - bug fix 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 ### 7.1.1 — 2026-10-05 The new features of this version (7.1.1) - bug fix The new features of this version (7.1) - bug fix The new features of this version (7.0) - Guitar can now be separated as its own stem (powered by a high-quality model) - Convert guitar to MIDI, with instrument (sound) selection - Bug fixes and stability improvements The new features of this version (6.1.1) - bug fix The new features of this version (6.1) - On iPhone, the faders for each part are now shown in a horizontally scrolling rack, making them easy to view and control even with many parts. (On iPad, the larger screen shows all parts at once, with no scrolling needed.) - Added a master fader to adjust the overall volume and left/right pan in one place. - Added stereo L/R level meters to monitor the output while playing. - Improved stability and fixed several issues. The new features of this version (6.0) - New high-performance separation model for cleaner results across vocals, drums, bass, piano, and other. - Choose your separation model — high-performance or standard — in Settings, with smarter defaults based on your device. - Performance improvements, bug fixes, and stability enhancements. The new features of this version (5.0) - UI improvements - bug fix The new features of this version (4.2) - bug fix The new features of this version (4.1) - bug fix The new features of this version (4.0) - playback transcribed MIDI files - bug fix The new features of this version (3.3) - bug fix The new features of this version (3.2) - Keyboard Shortcut Feature Added - SPACE: Start/Stop - Left Arrow Key: Rewind 10 seconds - Right Arrow Key: Fast-forward 10 seconds - "R" or "r": Restart The new features of this version (3.1) - Enhanced MIDI Export - Now you can save and export piano, drums, and accompaniment tracks in addition to bass and vocals. - Set Program Change for each track to customize the instrument during playback. - Set Tempo functionality for more precise control. - bug fix The new features of this version (3.0) - Piano sound separation in addition to Vocals, Drums, Bass and Other Instruments - AIFF,ALAC Support - New UI layout for better usability - easier file operations such as Load,Save,Export - Bug Fix The new features of this version (2.6) - Transcribes vocal and base tracks and export as MIDI format * MIDI playback is not supported on 2.6 - Supports FLAC format for input file - bug fix The new features of this version (2.5) - Unload feature which enables to unload separated tracks from players, remove those files and reset UI to the initial position - Support longer than 20min source songs. Max length is still limited by the available memory and storage size on the device - bug fix The new features of this version (2.4) - smooth volume faders - change the default behavior of the source track to turn down source volume to zero when separation has completed ( can be configured) - bug fix The new features of this version (2.3) - mute source track automatically after separation as a default for better usability - bug fix The new features of this version (2.2) - saves and exports Native Instruments Stem File format so that you can export all stems directly into DJ apps that support Stem format. * - On app restart, restores and reloads tracks separated just before restart. * * Monaural sound source is not supported - reduces power consumption in the background - bug fix 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 ### 7.1 — 2026-09-28 The new features of this version (7.1) - bug fix The new features of this version (7.0) - Guitar can now be separated as its own stem (powered by a high-quality model) - Convert guitar to MIDI, with instrument (sound) selection - Bug fixes and stability improvements The new features of this version (6.1.1) - bug fix The new features of this version (6.1) - On iPhone, the faders for each part are now shown in a horizontally scrolling rack, making them easy to view and control even with many parts. (On iPad, the larger screen shows all parts at once, with no scrolling needed.) - Added a master fader to adjust the overall volume and left/right pan in one place. - Added stereo L/R level meters to monitor the output while playing. - Improved stability and fixed several issues. The new features of this version (6.0) - New high-performance separation model for cleaner results across vocals, drums, bass, piano, and other. - Choose your separation model — high-performance or standard — in Settings, with smarter defaults based on your device. - Performance improvements, bug fixes, and stability enhancements. The new features of this version (5.0) - UI improvements - bug fix The new features of this version (4.2) - bug fix The new features of this version (4.1) - bug fix The new features of this version (4.0) - playback transcribed MIDI files - bug fix The new features of this version (3.3) - bug fix The new features of this version (3.2) - Keyboard Shortcut Feature Added - SPACE: Start/Stop - Left Arrow Key: Rewind 10 seconds - Right Arrow Key: Fast-forward 10 seconds - "R" or "r": Restart The new features of this version (3.1) - Enhanced MIDI Export - Now you can save and export piano, drums, and accompaniment tracks in addition to bass and vocals. - Set Program Change for each track to customize the instrument during playback. - Set Tempo functionality for more precise control. - bug fix The new features of this version (3.0) - Piano sound separation in addition to Vocals, Drums, Bass and Other Instruments - AIFF,ALAC Support - New UI layout for better usability - easier file operations such as Load,Save,Export - Bug Fix The new features of this version (2.6) - Transcribes vocal and base tracks and export as MIDI format * MIDI playback is not supported on 2.6 - Supports FLAC format for input file - bug fix The new features of this version (2.5) - Unload feature which enables to unload separated tracks from players, remove those files and reset UI to the initial position - Support longer than 20min source songs. Max length is still limited by the available memory and storage size on the device - bug fix The new features of this version (2.4) - smooth volume faders - change the default behavior of the source track to turn down source volume to zero when separation has completed ( can be configured) - bug fix The new features of this version (2.3) - mute source track automatically after separation as a default for better usability - bug fix The new features of this version (2.2) - saves and exports Native Instruments Stem File format so that you can export all stems directly into DJ apps that support Stem format. * - On app restart, restores and reloads tracks separated just before restart. * * Monaural sound source is not supported - reduces power consumption in the background - bug fix 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 ### 7.0 — 2026-09-20 The new features of this version (7.0) - Guitar can now be separated as its own stem (powered by a high-quality model) - Convert guitar to MIDI, with instrument (sound) selection - Bug fixes and stability improvements The new features of this version (6.1.1) - bug fix The new features of this version (6.1) - On iPhone, the faders for each part are now shown in a horizontally scrolling rack, making them easy to view and control even with many parts. (On iPad, the larger screen shows all parts at once, with no scrolling needed.) - Added a master fader to adjust the overall volume and left/right pan in one place. - Added stereo L/R level meters to monitor the output while playing. - Improved stability and fixed several issues. The new features of this version (6.0) - New high-performance separation model for cleaner results across vocals, drums, bass, piano, and other. - Choose your separation model — high-performance or standard — in Settings, with smarter defaults based on your device. - Performance improvements, bug fixes, and stability enhancements. The new features of this version (5.0) - UI improvements - bug fix The new features of this version (4.2) - bug fix The new features of this version (4.1) - bug fix The new features of this version (4.0) - playback transcribed MIDI files - bug fix The new features of this version (3.3) - bug fix The new features of this version (3.2) - Keyboard Shortcut Feature Added - SPACE: Start/Stop - Left Arrow Key: Rewind 10 seconds - Right Arrow Key: Fast-forward 10 seconds - "R" or "r": Restart The new features of this version (3.1) - Enhanced MIDI Export - Now you can save and export piano, drums, and accompaniment tracks in addition to bass and vocals. - Set Program Change for each track to customize the instrument during playback. - Set Tempo functionality for more precise control. - bug fix The new features of this version (3.0) - Piano sound separation in addition to Vocals, Drums, Bass and Other Instruments - AIFF,ALAC Support - New UI layout for better usability - easier file operations such as Load,Save,Export - Bug Fix The new features of this version (2.6) - Transcribes vocal and base tracks and export as MIDI format * MIDI playback is not supported on 2.6 - Supports FLAC format for input file - bug fix The new features of this version (2.5) - Unload feature which enables to unload separated tracks from players, remove those files and reset UI to the initial position - Support longer than 20min source songs. Max length is still limited by the available memory and storage size on the device - bug fix The new features of this version (2.4) - smooth volume faders - change the default behavior of the source track to turn down source volume to zero when separation has completed ( can be configured) - bug fix The new features of this version (2.3) - mute source track automatically after separation as a default for better usability - bug fix The new features of this version (2.2) - saves and exports Native Instruments Stem File format so that you can export all stems directly into DJ apps that support Stem format. * - On app restart, restores and reloads tracks separated just before restart. * * Monaural sound source is not supported - reduces power consumption in the background - bug fix 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 ### 6.1.1 — 2026-09-13 The new features of this version (6.1.1) - bug fix The new features of this version (6.1) - On iPhone, the faders for each part are now shown in a horizontally scrolling rack, making them easy to view and control even with many parts. (On iPad, the larger screen shows all parts at once, with no scrolling needed.) - Added a master fader to adjust the overall volume and left/right pan in one place. - Added stereo L/R level meters to monitor the output while playing. - Improved stability and fixed several issues. The new features of this version (6.0) - New high-performance separation model for cleaner results across vocals, drums, bass, piano, and other. - Choose your separation model — high-performance or standard — in Settings, with smarter defaults based on your device. - Performance improvements, bug fixes, and stability enhancements. The new features of this version (5.0) - UI improvements - bug fix The new features of this version (4.2) - bug fix The new features of this version (4.1) - bug fix The new features of this version (4.0) - playback transcribed MIDI files - bug fix The new features of this version (3.3) - bug fix The new features of this version (3.2) - Keyboard Shortcut Feature Added - SPACE: Start/Stop - Left Arrow Key: Rewind 10 seconds - Right Arrow Key: Fast-forward 10 seconds - "R" or "r": Restart The new features of this version (3.1) - Enhanced MIDI Export - Now you can save and export piano, drums, and accompaniment tracks in addition to bass and vocals. - Set Program Change for each track to customize the instrument during playback. - Set Tempo functionality for more precise control. - bug fix The new features of this version (3.0) - Piano sound separation in addition to Vocals, Drums, Bass and Other Instruments - AIFF,ALAC Support - New UI layout for better usability - easier file operations such as Load,Save,Export - Bug Fix The new features of this version (2.6) - Transcribes vocal and base tracks and export as MIDI format * MIDI playback is not supported on 2.6 - Supports FLAC format for input file - bug fix The new features of this version (2.5) - Unload feature which enables to unload separated tracks from players, remove those files and reset UI to the initial position - Support longer than 20min source songs. Max length is still limited by the available memory and storage size on the device - bug fix The new features of this version (2.4) - smooth volume faders - change the default behavior of the source track to turn down source volume to zero when separation has completed ( can be configured) - bug fix The new features of this version (2.3) - mute source track automatically after separation as a default for better usability - bug fix The new features of this version (2.2) - saves and exports Native Instruments Stem File format so that you can export all stems directly into DJ apps that support Stem format. * - On app restart, restores and reloads tracks separated just before restart. * * Monaural sound source is not supported - reduces power consumption in the background - bug fix 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 ## Apps similar to Let's Unmix | App | Rating | Price | Category | | --- | --- | --- | --- | | [ExtVocal Pro - Spatial Audio](https://appshunter.io/ios/app/extvocal-pro-spatial-audio/id1561597264) | 4.3 (10) | Free | Music | | [Ruffio: Backing track creator](https://appshunter.io/ios/app/ruffio-backing-track-creator/id1544449867) | 4.4 (434) | Free | Music | | [AI Vocal Remover - unMix](https://appshunter.io/ios/app/ai-vocal-remover-unmix/id1602757597) | 4.6 (626) | Free | Music | | [SoundHi +EQ30 HD Amp & Player](https://appshunter.io/ios/app/soundhi-plus-eq30-hd-amp-and-player/id1469178945) | 3.9 (32) | Free | Music | | [Vocal Remover, Audio Extractor](https://appshunter.io/ios/app/vocal-remover-audio-extractor/id6445925420) | 4.0 (9) | Free | Music | | [Spleeter - Vocal Remover](https://appshunter.io/ios/app/spleeter-vocal-remover/id6746929829) | 3.0 (2) | Free | Music | ## More apps by Hikaru Tsuyumine - [Vocal Extractor -Karaoke maker](https://appshunter.io/ios/app/vocal-extractor-karaoke-maker/id1438806137) - [Pablo Brush - Art Your Photo](https://appshunter.io/ios/app/pablo-brush-art-your-photo/id1447839646) - [Drums Extractor - for musician](https://appshunter.io/ios/app/drums-extractor-for-musician/id1471602693) - [Portrait Drawing](https://appshunter.io/ios/app/portrait-drawing/id1623269600) - [Let’s Unmix Audio Unit](https://appshunter.io/ios/app/lets-unmix-audio-unit/id1631417268) All apps by Hikaru Tsuyumine: https://appshunter.io/developer/1438695088 ## Related topics [hikaru tsuyumine](https://appshunter.io/ios/topics/hikaru-tsuyumine) · [unmix ai](https://appshunter.io/ios/topics/unmix-ai) · [unmix](https://appshunter.io/ios/topics/unmix) · [spleeter](https://appshunter.io/ios/topics/spleeter) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-09.*