Comparison

Stem Splitter vs Stemzel

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Stem Splitter

Isolate and manipulate individual instrument and vocal tracks from any song, entirely on your device. Adjust pitch, tempo, and export stems with a reactive visualizer. Offers a one-time purchase for full functionality after a free trial.

Highlights
  • 6-stem separation (vocals, drums, bass, guitar, piano, other)
  • Live reactive visualizer with multiple styles
  • Pitch and tempo adjustment for exports
  • Automatic BPM detection
  • 100% on-device processing
  • No ads or subscriptions
Features
Read full description

Split any song into clean, isolated stems — 100% on your device, no cloud, no waiting, no subscription. NEW: 6-STEM SEPARATION OffgridStem now separates Vocals, Drums, Bass, Guitar, Piano, and Other — not just the standard 4. Study a guitar riff note-for-note, isolate the piano part, or build a cleaner instrumental than ever. NEW: LIVE REACTIVE VISUALIZER Your exported mixdowns now live in a dedicated Exports player with a real-time, audio-reactive waveform — 14 visual styles including Bars, Neon Glow, Glass, Siri-style Fluid, Circular, Retro EQ, Cassette, and more, plus 4 color themes. Turn your phone sideways for an immersive fullscreen view. NEW: PITCH & TEMPO IN YOUR EXPORTS Shift the key, slow down the tempo to learn a part — your exported mixdown now matches exactly what you heard, not the original. NEW: AUTOMATIC BPM DETECTION Every separated song gets an estimated tempo, shown right where you’re already adjusting playback speed — no need to look it up separately. WHY OFFGRIDSTEM • 100% on-device — your music never leaves your phone • No ads, ever • One-time purchase — no subscription, no expiring credits • Fast — separation runs locally, no upload/download wait • Private by design — nothing to log in to, nothing to upload WHO IT’S FOR • Singers isolating vocals to study melody and phrasing • Guitarists and pianists isolating their instrument to learn a part • Karaoke and backing-track creators • Remixers and producers pulling clean stems from any track • Anyone who just wants the instrumental or vocals from a song HOW IT WORKS 1. Import a song, or extract audio from a video 2. OffgridStem separates it into up to 6 clean stems, entirely on your device 3. Mix, mute, solo, adjust pitch/speed per stem 4. Export a mixdown — with your pitch/speed changes baked in — or export individual stems Free to try: your first 3 songs are full-length and fully exportable. After that, previews are capped at 60 seconds unless you unlock Pro. No ads. No subscription. No cloud. Just your music, separated, on your terms.

About

Stemzel

Features
Read full description

Stemzel splits any song into four stems — vocals, drums, bass, and other instruments — entirely on your iPhone. No cloud uploads. No subscription. No account required. IMPORT YOUR AUDIO • File — pick from Files, iCloud Drive, or anywhere on your device • URL — paste a direct link to an MP3, M4A, or WAV file • Record — capture audio with your microphone and split it instantly MIX AND EXPORT • Mute or solo any stem to hear exactly what you want • Play back your mix with a built-in waveform scrubber • Export individual stems or your full mix to the Files app PRIVATE BY DESIGN Every split runs on your device using on-device AI. Your music never leaves your iPhone. No servers, no tracking, no ads. ONE-TIME UNLOCK Pay once, use Stemzel forever. Unlimited splits and downloads — no monthly fees, ever. PERFECT FOR • Musicians learning parts by ear • DJs and producers isolating elements • Karaoke and acapella practice • Remixing and sampling workflows • Anyone who wants stems without uploading to the cloud Stemzel is built for speed and privacy. Import a track, wait a moment while it separates, then mute the vocals, solo the drums, or export everything — all from your pocket. Questions or feedback? Visit stemzel.com/support

Screenshots

Stem Splitter4 screens
Stemzel3 screens

Verdict

The call

The clearest difference is iOS requirement: Stem Splitter at 17.6 against Stemzel's 26.0. On price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Stem Splitter sells 1 one-off in-app purchase and Stemzel sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 8 level
Stem Splitter versus Stemzel: the parameters behind the verdict, then further details
ParameterStem SplitterStemzel
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 10 days—
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — betteriPhone
Requires iOS17.6 — better26.0
Further details — not scored
Size427 MB290 MB
Age rating4+4+
DeveloperTsz Fung ChoiMahija Kottapalli

In-app purchases

1 purchases

Stem Splitter

One-time1
  • StemCraft Pro Lifetime$24.99
4 purchases

Stemzel

One-time4
  • Small Tip$0.99
  • Medium Tip$2.99
  • Large Tip$4.99
Show 1 more
  • Stemzel Unlock$7.99

Questions

Is Stem Splitter free?
Stem Splitter is free to download, with in-app purchases available.
Is Stemzel free?
Stemzel is free to download, with in-app purchases available.
Do Stem Splitter or Stemzel have ads?
Neither Stem Splitter nor Stemzel shows ads.

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