Rotor is not exactly a synthesizer, sequencer or DAW though it comprises the fundamental features. It offers many modules, sound effects, modulators and controllers which can be combined and used in order to create impressive composite patches.

This app is so different from the previous ones – it lets you feel like you have a real controller in your hands (before you could interact with the apps and music itself only through an iPad screen). The module features lots of effects and modulators and will allow you to process voices, guitar sounds or sounds of any other instrument. Audiobus system helps you to use Rotor as an in/out device connected to any other music app it is compatible with. Any module of the software tool can be externally controlled via one of the MIDI port/channel. Moreover the integration with Ableton Link provides an ideal Ableton Live sync.

The app included more than 100 samples and audio sessions. Users can also import their own samples.

In November 2016 Tangible Controller is going to come out (you can see it on the surface of the tablet in the picture). This is a physical device which makes it easier to work with the Rotor app.

The software costs $19.99. The controller can be purchased separately if you need it.

Reactable.com will give you more info and some technical features.