Ruffio vs Stem Split
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ruffio
This app uses advanced AI to split any song into its individual instrument stems, allowing you to mute or isolate vocals, drums, bass, and more. Create custom backing tracks, karaoke versions, or practice your instrument with isolated parts. All processing happens on your device for privacy and offline use.
- AI stem separation
- Mute vocals for karaoke
- Isolate instruments for practice
- Real-time mixing controls
- Offline audio processing
- Supports various audio/video formats
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Ruffio – Backing Track Maker, Karaoke App, Music Stem Splitter, and AI Music Practice Tool Ruffio is the all-in-one music app that lets you remove vocals from songs, isolate instruments, and create custom multitrack backing tracks using advanced AI audio separation—right on your iPhone or iPad. Whether you're a singer, musician, student, producer, DJ, or music lover, Ruffio helps you unlock the full potential of any track. Using powerful machine learning, Ruffio separates songs into stems—vocals, drums, bass, and accompaniment—so you can mute, solo, or adjust individual instruments. Create karaoke versions, practice your instrument, or hear the mix like never before. --- Powerful AI Features - AI Stem Separation: Split any song into vocals, drums, bass, and other instruments using Spleeter - Mute Vocals: Instantly create karaoke versions of any track - Mute Instruments: Remove drums, bass, guitar, or piano to create your own backing tracks - Solo Mode: Focus on one instrument to learn parts more effectively - Real-Time Mixing: Adjust each stem’s volume to build your perfect mix - Works Offline: Process songs directly on your device—no internet required after setup - Video and Audio Support: Import MP3, WAV, M4A, FLAC, MP4, and MOV files - Private: Your music never leaves your device—no cloud uploads --- How It Works - Import songs from your Music app (local files only) - Open files from iCloud Drive, Dropbox, Google Drive, or Files - Ruffio separates your song into stems using on-device AI - Adjust, mute, or solo each track in real time - Practice, perform, remix, or explore your music in new ways --- Perfect For - Singers – Remove vocals and sing along with real instrumentals - Guitarists – Mute guitar tracks and jam with the band - Drummers – Create drumless tracks to practice rhythm and timing - Bassists – Isolate or remove basslines for deeper learning - Pianists – Focus on keyboard parts or play over piano-free mixes - DJs and Producers – Extract stems for remixing and creative projects - Music Teachers – Make custom practice tools for students - Students – Learn songs by ear and study arrangements in depth - Cover Artists – Make pro-quality karaoke or backing tracks - Music Lovers – Hear hidden layers and details in every song --- Why Choose Ruffio - No subscriptions or locked core features - Fast, on-device audio processing - Simple, clean, user-friendly interface - Based on Spleeter: trusted by producers and musicologists worldwide - Constant updates based on community feedback --- File Support - MP3, M4A, AAC, FLAC, WAV (audio) - MP4, MOV (video audio extraction) - DRM-free songs from your Music app - Files from cloud storage and local folders --- Built with Spleeter Ruffio uses Spleeter, an open-source stem separation model developed by Deezer. This powerful AI is trusted by professional audio engineers and now available in a mobile app designed for everyone. All separation is done locally. Your music stays private. No cloud uploads, no waiting, no ads. --- Support & Feedback We're building Ruffio to be the best music practice and karaoke tool on iOS. Got ideas or issues? Contact us directly: rufusmall@hotmail.com --- Transform the way you learn, practice, and enjoy music. Download Ruffio now and turn any song into a karaoke track, backing track, or stem-separated mix.
Stem Split
This app separates any song into four audio stems: vocals, accompaniment, bass, and drums. All processing happens on your device, ensuring privacy and no uploads. You can then adjust the level, tempo, and pitch of these stems in real-time.
- Separate songs into 4 audio stems
- On-device processing
- Real-time level, tempo, and pitch adjustment
- Import from Files app and iTunes
- Supports WAV, AIFF, MP3, and MP4 formats
- Export stems for sharing and other apps
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With Stem Split you can separate any song into 4 high quality stems: vocal, accompaniment, bass and drums. All processing takes place on your device, using an advanced neural network, ensuring your data stays on your phone. Import songs files from Files or from your iTunes library (non-DRM tracks only). Play back stems and adjust level, tempo and pitch in realtime. The imported song's stems are always accessible from within Files for easy sharing or import into other audio apps. Supported audio input formats include: WAV, AIF, MP3 and MP4. Stems can be saved in AAC format to save space or uncompressed WAV format for highest quality.
Screenshots
Verdict
The clearest difference is rating: Ruffio at 4.4 against Stem Split's 2.3. Ruffio also leads on in-app purchases (none vs 1) and update cadence (every 10 days vs every 17 months). Stem Split's advantage is review sentiment (100% vs 66%). On price and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Stem Split sells 1 one-off in-app purchase. Ruffio asks for nothing beyond the download.
Ruffio holds the better App Store score, 4.4 against 2.3. That said, the two scores are not equally well evidenced: Ruffio has 434 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 66% of Ruffio's written reviews are positive against 100% of Stem Split's, so the app with the better star average is not the one people write more warmly about.
Ruffio ships an update every 10 days, Stem Split every 17 months. The most recent releases landed on September 13, 2026 and September 15, 2026 respectively.
| Parameter | Ruffio | Stem Split |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (434 ratings) — better | 2.3 (4 ratings) |
| Positive reviews | 65.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 434 — better | 4 |
| Update frequency | Every 10 days — better | Every 17 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 59 MB | 179 MB |
| Age rating | 17+ | 4+ |
| Developer | Rufus Mall | Mellowmuse Ltd |
Customer experience
Ruffio
Stem Split
Bugs and requests
Ruffio
Reported bugs
9 issues- YouTube import not working (multiple reports)
- App crashes on iPad
- Audio phasing in and out during playback
- Sliders not responding to input
- Staticky sound quality
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- Drums still audible when slider turned off
- Voice cutting out intermittently
- App not functioning on iPhone 13 Pro
- Blank screen on iPad with missing import button
Requested features
8 requests- Export stems as individual audio files
- Pitch change and tempo adjustment
- Ability to play songs backwards
- Better slider controls and responsiveness
- Playlist management system
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- Easy track deletion without reinstalling
- Cleaner and clearer stem separation
- Better iPad UI with visible import button
Stem Split
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Ruffio
No in-app purchases
Stem Split
- Vocal Split$3.99









