# Quartet Lab — String quartet arranging lab

> String quartet arranging lab (iPhone/iPad app by Martin Adler.)

- Source: https://appshunter.io/ios/app/quartet-lab/id6823740479 (this page in markdown: same URL + `.md`)
- Developer: [Martin Adler](https://appshunter.io/developer/1896354791)
- Category: Music, Education
- Price: $4.99
- Age rating: 4+
- Requires: iOS 17.0 · 47 MB
- Languages: American English, European Spanish
- Released: 2026-10-30
- Data updated: 2026-11-05

## What is Quartet Lab?

Quartet Lab is a hands-on workshop for writing and arranging for string quartet: draw a melody and get a four-part arrangement back, generate one from scratch, or study real repertoire — all rendered in notation and piano roll, and played back with real string samples.

ARRANGE — Draw a Violin I melody on the piano roll and arrange it for string quartet in one tap. Choose close or open voicing, chorale/homorhythm, melody+accompaniment or drone texture, harmonic rhythm and chord vocabulary.

GENERATE — Create a complete four-part quartet from scratch in any key, major or minor, with the same voicing and texture controls.

SCORE & PIANO ROLL — Read the result as hand-drawn notation (correct clefs, including alto clef for viola) or as a piano roll — both scroll together with the playhead.

ARTICULATION — Set Arco or Pizzicato per voice from the mixer, or paint it note by note directly on the score or piano roll.

LIBRARY — Arrange J.S. Bach chorales for quartet, play real public-domain quartets by Haydn, Mozart, Beethoven, Brahms, Schubert and Schumann, or arrange public-domain and CC-licensed popular songs.

THEORY — Lessons on range, voicing, texture, idiomatic technique, parallel motion and harmony — written for string quartet, not generic music theory.

EXPORT — Export your arrangement as a Standard MIDI File or as audio (.m4a) straight from the Score screen.

AUv3 PLUG-IN — Use Quartet Lab inside GarageBand, AUM and other hosts as a tempo-synced generator that outputs quartet audio and MIDI to record in your own DAW.

NO ACCOUNT, NO ADS, NO TRACKING — Everything runs on your device.

## Is Quartet Lab safe?

Not enough ratings yet to assess Quartet Lab.

## Is Quartet Lab legit?

Quartet Lab appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Quartet Lab is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-30

No release notes.

## More apps by Martin Adler

- [Reharmonizator](https://appshunter.io/ios/app/reharmonizator/id6767040541)
- [Neo-Riemannian](https://appshunter.io/ios/app/neo-riemannian/id6777607274)
- [Negative Harmony](https://appshunter.io/ios/app/negative-harmony/id6781442884)
- [Choral Lab](https://appshunter.io/ios/app/choral-lab/id6782184585)
- [Particls](https://appshunter.io/ios/app/particls/id6783961985)
- [Padscape](https://appshunter.io/ios/app/padscape/id6785107448)

All apps by Martin Adler: https://appshunter.io/developer/1896354791

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*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 2026-11-05.*