# Rubberband: Microtonal Synth — Maqam, quarter-tone, MPE glide

> Maqam, quarter-tone, MPE glide (iPhone/iPad app by Thinkspark.)

- Source: https://appshunter.io/ios/app/rubberband-microtonal-synth/id6781069946 (this page in markdown: same URL + `.md`)
- Developer: [Thinkspark](https://appshunter.io/developer/1047724192)
- Category: Music
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English, Arabic, French (France), German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish and 1 more
- Released: 2026-06-29
- Data updated: 2026-09-30
- User reviews in markdown: https://appshunter.io/ios/app/rubberband-microtonal-synth/id6781069946/reviews.md

## What is Rubberband?

RUBBERBAND is not a keyboard. It's an elastic surface where every line is a magnet: you glide, and GRAVITY pulls notes toward the scale. All the way up, you can't play out of tune. At zero, it's free glissando. In between, your ear decides.

A microtonal synth built to be both an instant toy and a serious instrument — played like a theremin or a ribbon controller, tuned like the world.

THE WORLD'S TUNINGS
RUBBERBAND truly speaks microtonality — not an effect, the heart of the instrument. Arabic maqam, Turkish makam, Persian dastgah, just intonation, just blues and barbershop, klezmer modes, Southeast-Asian equiheptatonic, xenharmonic temperaments (19- and 31-TET, the harmonic series), Western scales — with region-adjustable neutral tuning. The engine thinks in cents: any tuning on Earth is within reach.

36 VOICES
Plucked strings, basses, bowed instruments (violin, cello, kamancheh, sarangi), bells and bars, synth voices, the RUBBER↔STRING morph, the instruments of the East (oud, qanun, santur, ney, zurna, duduk), and granular clouds. Every voice is physically modelled and rendered in real time — no samples.

EXPRESSIVE UNDER THE FINGER (MPE)
Pressure is dynamics; gliding along a string changes the colour, from sul tasto to ponticello; vertical is pitch. Tilt the phone and it becomes an axis of expression. MPE MIDI out drives your other synths with the same gestures.

LISTEN TO THE ROOM
RUBBERBAND hears the music around you, detects the key, and tunes to it. Play along with anyone, in tune.

ALSO
A DRONE holding the tonic under your playing, a sympathetic halo that rings the neighbouring strings, a LOOPER to stack loops, and recording your takes straight to your device.

IN YOUR LANGUAGE
Full interface in English, French, Spanish, Italian, Portuguese (Brazil), German, Turkish, Japanese, Simplified Chinese, Korean and Arabic — with real musician vocabulary in each, not machine translation.

Haptics, Metal rendering, fully native. No account, no ads, no data collected — the microphone is analysed locally and never recorded or sent.

FREE, THEN PRO
Start free: the full elastic surface, starter voices, and a taste of the world's tunings. The RUBBERBAND PRO unlock (one-time purchase) opens all 36 voices, the full catalogue of world tunings, recording and sharing, MPE MIDI output, MOTION and LISTEN.

One-time purchase. No subscription.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| RUBBERBAND PRO | $8.99 | one-time |



## Version history (last 4 releases)

### 1.1.1 — 2026-09-13

LENGTH and RELEASE now reach the bells and the drum heads: each voice's character goes all the way.

New: “I have a code” in PRO, to redeem a promo code.

### 1.1.0 — 2026-07-20

RUBBERBAND now speaks 11 languages.

• New languages: English, Spanish, Italian, Portuguese (Brazil), German, Turkish, Japanese, Simplified Chinese, Korean and Arabic — full interface, including the tuner, the coach and the store.
• Real musician vocabulary in every language: dem and karar in Turkish, أرضية and دوزان in Arabic, 音色 in Japanese — translated by musicians, not word for word.
• Arabic: fully mirrored right-to-left interface.
• Fixes: several strings stayed in French outside the French locale (unlock, restore purchases, coach cards).

### 1.0.1 — 2026-07-06

Every lutherie now has its own character.
• All 36 voices tuned one by one (acoustic research): the harp gets its halo back, the koto its dryness, the ney its breath.
• Your CHARACTER settings are remembered per lutherie — RESET returns to factory.
• New gesture: rest a finger on a ringing string to mute it, like on the real instrument.
• Fast playing stays clean: re-plucking damps the string first.

### 1.0 — 2026-06-30

No release notes.

## Apps similar to Rubberband

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [24-TET Keys: Microtonal MIDI](https://appshunter.io/ios/app/24-tet-keys-microtonal-midi/id6789963675) | 4.6 (5) | Free | Music |
| [Derson DSynth Mobile](https://appshunter.io/ios/app/derson-dsynth-mobile/id6778253991) | — | Free | Music |
| [Fingerophone: Touch Synth](https://appshunter.io/ios/app/fingerophone-touch-synth/id6784870429) | — | Free | Music |
| [Synesthesia Synth](https://appshunter.io/ios/app/synesthesia-synth/id6763379132) | 5.0 (2) | Free | Music |
| [Beat Kitchen Harmonic Synth](https://appshunter.io/ios/app/beat-kitchen-harmonic-synth/id6780983442) | 4.8 (12) | Free | Music |
| [Mochizuki - AUv3 Synth](https://appshunter.io/ios/app/mochizuki-auv3-synth/id6776942580) | 3.5 (10) | Free | Music |

## More apps by Thinkspark

- [PitchOS](https://appshunter.io/ios/app/pitchos/id6777553963)
- [Gliss: Ribbon Synth](https://appshunter.io/ios/app/gliss-ribbon-synth/id6811004834)

All apps by Thinkspark: https://appshunter.io/developer/1047724192

## Related topics

[rubber band](https://appshunter.io/ios/topics/rubber-band)

---

*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 2026-09-30.*