Extrack vs StemScriber
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Extrack
Instantly split songs into individual instrument parts and analyze chords in real-time. Adjust volumes, practice "minus one" style, and visualize chord fingerings for guitar or piano. Perfect for musicians of all levels looking to jam along with their favorite tracks.
- Instrumental stem separation
- Real-time chord analysis
- Adjustable instrument volumes
- Practice 'minus one' mode
- Visual chord fingering guides
- Tempo and key adjustment
- Section looping
Read full descriptionHide full description
Play along with your favorite tracks. Extrack, an app that lets you split instruments and analyze chords, instantly. -You can use the basic features for free with no time limit. Subscribe, and you can unlock more advanced features. ・Separate songs into different instrument parts (vocal, guitar, piano, bass, drums, wind instruments) and freely adjust their volumes. ・Practice "minus one" style (mute one part and play it yourself). ・See the chords and how to play them on guitar or piano in real time while the song plays. ・Change the tempo, keys, or repeat specific sections easily. The app is very easy to use, even for beginners. ■When you feel like jamming with a band! -Load any song from your smartphone or tablet, and Extrack automatically separates it into each instrument part — such as guitar, drums, bass, piano, and wind instruments like saxophone. You can adjust the volume of each part freely, just the way you like. -If you’re a guitarist, turn down the other instruments and focus on the guitar sound to pick up even the most subtle phrase by ear. Then, switch the mix up, mute the guitar part and jam along with the rest of the band. It’s the closest thing to being on stage with your favorite artists! Want to tighten your rhythm? Turn up the drums and bass for focused practice. Or mute the vocals and enjoy singing along karaoke-style with real band sound! ■When you feel like jamming to that song you love! -Extrack automatically analyzes and displays the chord progression of any song. Even if you’re not good at figuring out chords by ear, you can enjoy jamming while watching the chords in real time. -It also shows how to play each chord on guitar or piano visually so even beginners who can’t read sheet music can feel confident. -Just load a song, and you can start practicing right away! If the song has chords that are too difficult, simply change the key or set a capo to make them easier to play. ■When you’re stuck on a part you’re having trouble with. -Want to play just one phrase over and over? -Want to slow down the tempo and practice carefully? -With Extrack, you can do it all easily. Simply select the section you want to repeat, skip by measure, or adjust the playback speed to match your pace. Plus, Extrack comes with a built-in metronome that automatically syncs with the song’s tempo, perfect for training your timing and rhythm. ■Just load your favorite song, and enjoy practicing with all of Extrack’s features. -Works with : MP3, AAC, FLAC, and more. -Add songs from iTunes or your CDs and start playing! - You can even import songs directly from cloud storage services.
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
Read full descriptionHide full description
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 Extrack's 3.8. StemScriber also leads on update cadence (weekly vs every 6 weeks) and iOS requirement (15.0 vs 17.0). Extrack's advantage is ratings volume (24 vs 1). On price, ads, in-app purchases and monetization model 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. Extrack sells 2 in-app purchases, starting at $5.99 per month 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 3.8. That said, the two scores are not equally well evidenced: Extrack has 24 ratings behind it against 1, so its average is the more settled of the two.
Extrack ships an update every 6 weeks, StemScriber weekly. The most recent releases landed on October 9, 2026 and September 30, 2026 respectively.
| Parameter | Extrack | StemScriber |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (24 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 36.8% of reviews | — |
| Number of ratings | 24 — better | 1 |
| Update frequency | Every 6 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 604 MB | 116 MB |
| Age rating | 4+ | 4+ |
| Developer | Yamaha Corporation | Jeffrey Kozelski |
Customer experience
Extrack
StemScriber
In-app purchases
Extrack
- Monthly Plan7 Days trial$5.991 Month
- Yearly Plan7 Days trial$39.991 Year
StemScriber
- Pro Monthly$9.991 Month
- Pro Annual$89.991 Year
- StemScriber Lifetime$199.99









