StemLab vs StemScriber
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StemLab
This app uses AI to isolate up to six musical stems from any song directly on your device. It offers a multi-track mixer with studio effects, looping, recording, and export capabilities for musicians and producers. No subscription is required for core functionality.
- AI song stem separation
- Multi-track mixer
- Studio effects chain
- A/B looping
- On-device processing
- Stem export
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Split any song into 6 isolated stems on your iPhone — vocals, drums, bass, guitar, piano, and other. Nothing uploads. Nothing waits in a cloud queue. No subscription required. StemLab runs the AI separation entirely on your device, then opens a full multi-track mixer with studio FX, A/B looping, recording, and stem export. Built for musicians, producers, and singers who want clean, isolated stems without monthly fees. SEPARATE Imports MP3, WAV, FLAC, M4A, even MP4 and MOV video — up to 500 MB per file. Pick a 4-stem or 6-stem AI model to extract vocals, drums, bass, guitar, piano, and more in a single pass. Works as a vocal remover, instrumental maker, acapella extractor, karaoke track maker, and backing track creator. Everything happens on your iPhone — your music never leaves the device. MIX A real multi-track mixer, not just a separator. Per-stem volume, solo, mute. Set A/B loop points to slow down a solo, transcribe a phrase, or rehearse the chorus on repeat. Scrub the timeline with centisecond precision and watch live waveforms render in real time. CHOP & SAMPLE Pull a clean drum break, lift a vocal chop, or grab a bass line for a lofi beat. Isolate any stem, loop the exact bars with A/B points, and export it as a WAV sample ready to flip in your sampler or DAW. MAKE IT YOURS Record your own vocal over the instrumental, lay down a guitar take on top of the AI bass, or import any audio file as a custom layer. Build mashups, track covers, write demos, replace a stem entirely — all inside one session, on your phone. ADD EFFECTS Shape each stem with a 6-effect chain: Pitch Shift, Reverb, Delay, Compressor, 4-band EQ, and Saturation. Run Bus FX on the master mix. Bypass any effect without removing it. Save your settings as a reusable preset and load them on the next song with one tap. EXPORT Send out individual stems or a new stereo mixdown in WAV, FLAC, or M4A — now baked with your FX chain, so your Pitch Shift, Reverb, Delay, Compressor, EQ, and Saturation settings carry straight into the export. Pick your sample rate (44.1 / 48 / 96 kHz) and bit depth (16 / 24 / 32-bit). Drop the result straight into your DAW, sampler, looper, or any other app. Built for guitarists isolating solos, bassists transcribing lines, beatmakers pulling clean acapellas, DJs making edits, music teachers building practice tracks, worship leaders covering for missing players, and singers laying covers over original songs. ---------- StemLab Pro unlocks unlimited separations, individual stem export, the full FX chain, and unlimited presets. Available as a one-time lifetime purchase — buy once, keep what you bought. Yearly subscription option also available. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms: https://lauperlabs.com/stemlab/terms Privacy: https://lauperlabs.com/stemlab/privacy
StemScriber
This music app isolates individual instruments from songs, allowing users to slow down playback without altering pitch. It also provides chord charts and a built-in tuner to aid in learning and practicing music.
- Isolate any instrument
- Slow down tempo without pitch change
- Generate chord charts
- Built-in tuner and fretboard
- Practice music by ear
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Learn any song the way you actually practice it. StemScriber pulls a song apart into its separate instruments so you can hear exactly what you're trying to play — then slows it down so you can keep up. What it does: • Isolate any instrument — mute the vocals and band, solo just the guitar (or bass, drums, piano, vocals). Finally hear the part that was buried in the mix. • Slow it down — drop the tempo without the pitch turning to chipmunks. Sit with a fast riff at half speed until it's under your fingers. • See the chords — a chord chart is generated for the song so you can follow the changes while you play. • Tuner + fretboard — built-in, free, no sign-up. Made for the way musicians really learn — by ear, slowed down, one part at a time. Whether you're working up a cover, learning a solo, or figuring out a bass line, StemScriber gets you from hearing it to playing it faster. Use it with music you own or have the rights to. Chord detection is a strong starting point, not a perfect transcription — it gets you playing fast, and you can trust your ears for the rest. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://stemscriber.com/privacy.html
Screenshots
Verdict
The clearest difference is rating: StemScriber at 5.0 against StemLab's 4.5. StemScriber also leads on review sentiment (100% vs 67%) and iOS requirement (15.0 vs 26.2). StemLab's advantage is ratings volume (28 vs 2). On price, update cadence, ads and in-app purchases 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. StemLab sells 2 in-app purchases, starting at $4.99 per year and StemScriber sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
StemScriber holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: StemLab has 28 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 67% of StemLab's written reviews are positive against 100% of StemScriber's.
StemLab ships an update every 11 days, StemScriber weekly. Both last shipped on October 24, 2026.
| Parameter | StemLab | StemScriber |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (28 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 28 — better | 2 |
| Update frequency | Every 11 days | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 26.2 | 15.0 — better |
| Further details — not scored | ||
| Size | 350 MB | 121 MB |
| Age rating | 4+ | 4+ |
| Developer | Lauper Labs | Jeffrey Kozelski |
Customer experience
StemLab
StemScriber
In-app purchases
StemLab
- StemLab Pro Yearly$4.991 Year
- StemLab Pro Lifetime$16.99
StemScriber
- Pro Monthly$9.991 Month
- Pro Annual$89.991 Year
- StemScriber Lifetime$199.99








