# UPISketch2 — Let's draw music!

> Draw absolute pitch curves over sounds using granular synthesis for music composition. (iPhone/iPad app by Rodolphe Bourotte.)

- Source: https://appshunter.io/ios/app/upisketch2/id1461075546 (this page in markdown: same URL + `.md`)
- Developer: [Rodolphe Bourotte](https://appshunter.io/developer/1333253948)
- Category: Music, Music, Education
- Price: Free
- Rating: 5.00/5 from 3 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.3 · 53 MB
- Released: 2019-05-03
- Data updated: 2026-08-14
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/upisketch2/id1461075546/reviews.md

## What is UPISketch2?

UPISketch is a new kind of composition tool, that keeps the principle of “pitch versus time” of the classical score, extended in the continuous domain. It allows to freely draw absolute pitch curves applied to existing sounds. It uses granular synthesis. It can be used to sketch musical ideas, try alternative scales (divisions of the octave), and more.
It is inspired by the famous UPIC machine that was invented in 1977 by Iannis Xenakis and the CEMAMu engineers.

New with Version 2: 
Amplitude curves have been added
Live Synthesis: we can monitor the score in real time at the position given by the playhead
Groups, and group duplication
List of gestures showing unfoldable groups
Much improved Undo / Redo
Solo monitoring
Smoother pitch glissandi
More display options
Zooming with mouse wheel (desktop version)

… and other fixes…

## Key features

- Draw absolute pitch curves
- Granular synthesis
- Amplitude curves
- Real-time synthesis monitoring
- Improved undo/redo
- Group duplication

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/upisketch2/id1461075546/reviews.md

### 5/5 — Cool app

*2023-06-11*

This app is so cool

**Developer response:** Hello, glad you enjoyed it. 

Please note that a new version, UPISketch4, is available, and you may find it even more interesting!

Windows / MacOS : 
https://undefinedbehaviour.gumroad.com/l/upisketch4-demo
iOS :
https://apps.apple.com/us/app/upisketch4/id6761500631?l=fr-FR

All the best,
Rodolphe

### 5/5 — Interesting app for experimental music

*2019-05-04*

I enjoyed drawing a melody for an elephant

**Developer response:** Hello, glad you enjoyed it. 

Please note that a new version, UPISketch4, is available, and you may find it even more interesting!

Windows / MacOS : 
https://undefinedbehaviour.gumroad.com/l/upisketch4-demo
iOS :
https://apps.apple.com/us/app/upisketch4/id6761500631?l=fr-FR

All the best,
Rodolphe

## Frequently asked questions about UPISketch2

### What is UPISketch2?

UPISketch2 is a music composition tool that allows users to draw absolute pitch curves over existing sounds using granular synthesis. It's inspired by the UPIC machine invented by Iannis Xenakis.

### What new features were added in UPISketch2?

Version 2 introduced amplitude curves, live synthesis monitoring, group duplication, improved undo/redo functionality, solo monitoring, and smoother pitch glissandi.

### Does UPISketch2 support real-time playback?

Yes, UPISketch2 features live synthesis, allowing you to monitor the score in real time as the playhead moves.

### What devices is UPISketch2 available on?

UPISketch2 is available on iPhone, iPad, and iPod, as indicated by its supported devices list.

### What is the age rating for UPISketch2?

UPISketch2 has an age rating of 4+, making it suitable for a wide range of users.

### How often is UPISketch2 updated?

The latest version, 2.0.11, was released on September 24, 2019. While the last update was in 2019, the app has received significant updates to version 2.

### What is the user sentiment for UPISketch2?

Based on the provided data, UPISketch2 has a perfect rating of 5.0 stars from 3 ratings, suggesting very positive user sentiment.

### Does UPISketch2 have ads?

No, UPISketch2 does not contain advertisements. The app is free and does not feature any ads.

## Version history (last 2 releases)

### 2.0.11 — 2019-09-24

This update makes the "help" button appear as soon as the program opens, which avoids having to understand first of all how the button at the top left works, which allows you to change the menu.

### 2.0.10 — 2019-05-02

No release notes.

## Apps similar to UPISketch2

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Mazetools Mutant](https://appshunter.io/ios/app/mazetools-mutant/id1483123496) | 4.2 (31) | $5.99 | Music |
| [ddtctmcc-ff](https://appshunter.io/ios/app/ddtctmcc-ff/id6460858922) | 5.0 (5) | Free | Music |

## More apps by Rodolphe Bourotte

- [UPISketch](https://appshunter.io/ios/app/upisketch/id1389444597)
- [UPISketchPlay](https://appshunter.io/ios/app/upisketchplay/id1586866304)
- [UPISketch4](https://appshunter.io/ios/app/upisketch4/id6761500631)

All apps by Rodolphe Bourotte: https://appshunter.io/developer/1333253948

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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 2026-08-14.*