# ROTOR - Tangible Music Synth

> Tangible music synthesizer and performance suite with modular interconnectivity. (iPhone/iPad app by Reactable Systems SL.)

- Source: https://appshunter.io/ios/app/rotor-tangible-music-synth/id1110719747 (this page in markdown: same URL + `.md`)
- Developer: [Reactable Systems SL](https://appshunter.io/developer/381127669)
- Category: Music
- Price: $7.99
- Rating: 3.20/5 from 30 App Store ratings · 49 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 61 MB
- Languages: American English
- Released: 2016-10-13
- Data updated: 2026-08-30
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/rotor-tangible-music-synth/id1110719747/reviews.md

## What is ROTOR?

ROTOR is the new app that turns your device into a complete music performance suite. Using the optional ROTOR controllers, which can be purchased separately, it also brings the reactable tangible music experience that has captivated musicians such as Björk, Coldplay or Gui Boratto, for the first time into the iPad.

**PLEASE NOTE: This App is officially supported on the following devices: iPhone 4S and newer, iPad Air/Air2, iPad Mini 2/3/4, and iPad Pro.**

NOT A CONVENTIONAL SYNTHESIZER, NEITHER A SEQUENCER OR DAW…
… although it includes components from all of them. ROTOR incorporates dozens of modules, among instruments, audio effects, modulators and controllers, all interconnectable between them, which can be used for creating the most expressive and intricate patches in a unique way. It is an unprecedented multitouch/tangible instrument specially designed for live interaction and performance.

TANGIBLE CONTROL
With our exclusive physical control objects especially conceived for the iPad, and which can be purchased separately, ROTOR brings the unique tangible experience of the reactable for the first time to the iPad! This means that while all standard multi-touch capabilities are preserved, the ability to control any parameter by moving and twisting our tangible pucks over the iPad’s surface, brings 3 additional degrees of freedom to each hand!

The controllers are available in our website, but this app can also be perfectly used without them.

ALWAYS IN SYNC AND IN KEY
ROTOR comes with automatic real-time key detection and time stretching algorithms that allow for samples, loops and sequences to stay not only in sync but also in harmony with each other. All wavefiles can be configured either as masters, thus determining at any instant the tonality of the whole session, or as slaves, thus adapting automatically to this computed tonality.

WORKFLOW INTEGRATION AND COLLABORATION
ROTOR MIC/LINE IN module and its panoply of effects and modulators allows to process voice, guitars, or any other instrument, in unheard ways. With Audiobus, ROTOR can be used as an input/output device in combination with any other compatible music apps. Any ROTOR module can also receive external MIDI control from any user-selectable MIDI port/channel. Moreover, its integration of Ableton Link allows ROTOR to play in perfect sync with Ableton Live and other Ableton Link compatible iOS apps running in other devices.

FROM COMPLETE CONTROL TO INSPIRING SERENDIPITY
ROTOR includes dozens of multi-touch control panels such as virtual keyboards, polyphonic and monophonic step-sequencers, envelope generators, or 2D panels, which empower to control in real-time, every detail or nuance of the performance. On the other hand, interconnecting less linear and less predictable modules, such as the accelerometer input, the beat slicer or the feedback delay, opens a whole universe of generative and serendipitous creations. This, combined with ROTOR’s live recording capabilities, which simplifies the capturing of loops on-the-fly and always in sync, turns ROTOR into the ULTIMATE LOOP CREATOR MACHINE.

SONIC VERSATILITY
ROTOR also comes with 100+ high quality loops and sessions created by professional music producers. Along with these loops, users can import their own ones and combine them with ROTOR’s advanced synthesis and processing capabilities. From House or EDM to the most experimental generative soundscapes, ROTOR sonic versatility is unparalleled.

## Key features

- Tangible music control with physical pucks
- Modular synth with instruments, effects, and controllers
- Automatic real-time key detection and time stretching
- Audiobus and Ableton Link integration
- MIDI control input
- Live recording capabilities
- Multi-touch control panels

## Recent user reviews (10 of 49)

All indexed reviews: https://appshunter.io/ios/app/rotor-tangible-music-synth/id1110719747/reviews.md

### 5/5 — Keep working on it

*2025-10-16*

Amazing idea, please keep working on it and have tutorials for dummies. Also fix the saving part.

### 1/5 — why are you still selling this?

*2022-09-15*

its a brilliant app that is useless now: crashes upon saving, a problem its had for years.

**Developer response:** Hi, we are working on a new version that will fix it. You will get it very soon.

### 1/5 — Can not save!

*2021-01-24*

Please fix the bug. I can not save a session. I think it is sorry.

### 1/5 — 終わってた。

*2020-12-14*

見かけほど可能性を感じず放って置いたが、
久々に触ってみたら、保存すらできなくなってた。
コントローラも買ったのになぁ。
盛り上がってた自分、反省…

iPad Pro 10.5-inch ios13.5

### 2/5 — Pas de sauvegarde sur iPad Pro

*2020-11-08*

Superbe application pour le peu que j’ai essayé.
Malheureusement depuis la mise à jour iOS, impossible de sauvegarder quoique ce soit.

### 1/5 — 无法进入

*2020-10-10*

刚下载才看到不能用，开发商赶快更新呀

### 1/5 — Just crashes

*2020-09-16*

desperately need update, or you just lost all your works!

**Developer response:** Thank you for noticing. We will update and fix the app as soon as possible.

### 5/5 — It's been 2 years

*2020-09-07*

Very cool app that obviously took a ton of hard work to develop. Why did you go to sleep for 2 years? I guess you gave up. Too bad because you could have evolved it or created a new version that had different controls if people didn't like this one. You guys are great developers. Why give up.

### 1/5 — Incompatible

*2020-08-26*

Ne fonctionne pas sur iPad Pro .pourquoi ?mise à jour obligatoire.12eur pour rien.

### 1/5 — 更新了系统，软件不能用了哎

*2020-08-25*

系统。。。

## Frequently asked questions about ROTOR

### What is ROTOR - Tangible Music Synth?

ROTOR is a music performance suite that turns your device into a versatile sound creation tool. It features dozens of interconnectable modules including instruments, effects, and controllers, designed for expressive live interaction and performance. The app also supports optional physical controllers for a unique tangible music experience.

### What are the key features of ROTOR?

Key features include tangible control with optional physical pucks, a modular system of instruments and effects, automatic real-time key detection and time stretching for syncing audio, integration with Audiobus and Ableton Link, MIDI control input, live recording, and various multi-touch control panels.

### Is ROTOR free to use?

The ROTOR app itself is free to download and use. However, optional physical ROTOR controllers, which enhance the tangible control experience, can be purchased separately from the developer's website.

### What devices is ROTOR compatible with?

ROTOR is officially supported on iPhone 4S and newer, iPad Air/Air2, iPad Mini 2/3/4, and iPad Pro. It is not officially supported on older devices.

### How can I use ROTOR for live performance?

ROTOR is designed for live interaction and performance. You can create intricate patches using its modular system, control parameters in real-time with multi-touch or tangible controllers, and use features like automatic syncing and key detection to keep your performance in harmony. Integration with Audiobus and Ableton Link allows for seamless collaboration with other music apps and devices.

## Version history (last 5 releases)

### 1.3.11 — 2020-11-04

Bug fixes and performance improvements.

### 1.3.10 — 2018-06-27

Adds support for the latest iPad model (iPad 6).

### 1.3.9 — 2018-01-04

Are you still having problems with ROTOR on your iPhone 8 and iPhone X device? Then this update is for you!

Hoping you have a great start of 2018 with this new version.

### 1.3.8 — 2017-12-12

Updates the application icon.
Fixes crashes in iPhone 8, 8S, and X.

### 1.3.7 — 2017-06-20

Adds support for newest iPad models (iPad Pro 10.5" and 2nd generation iPad Pro).

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## More apps by Reactable Systems SL

- [Reactable mobile](https://appshunter.io/ios/app/reactable-mobile/id381127666)
- [STEPS - MIDI Sequencer](https://appshunter.io/ios/app/steps-midi-sequencer/id1224149283)
- [SNAP - Reactable Drum Machine](https://appshunter.io/ios/app/snap-reactable-drum-machine/id1276650009)

All apps by Reactable Systems SL: https://appshunter.io/developer/381127669

## Related topics

[reactable](https://appshunter.io/ios/topics/reactable) · [reactable systems sl](https://appshunter.io/ios/topics/reactable-systems-sl)

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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 2026-08-30.*