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Clawtar - Adaptive MIDI Controller

ChordUp developer Dmitry Klochkov has released a new "adaptive" MIDI controller that scales and adjusts to where your hands are. The idea here is that you can focus on your performance instead of where your hands are on the screen. The way you play this one is quite unique; with one hand controlling octave and scale, while the other is controlling notes. There's a Quick Start Guide with a lot of short videos showing off some of the features.

Clawtar iTunes Description:

Clawtar is a musical instrument and MIDI controller with adaptive interface.

The biggest problem with all virtual musical instruments is the almost complete lack of tactile reference. You have to constantly control your performance with your eyes to make sure your fingers go to the right places. This aproach is not very good for two reasons. Firstly, vision is much slower than audio and tactile perceptions. Secondly, the process of continuous analysing of visual information is very resource intensive for your brain. As a result, it is very hard to feel relaxed and concentrate on the music during a performance.

So how can we solve this problem? Instead of trying to adapt to an instrument we can make the instrument to adapt to the player!

Clawtar's adaptive interface allows you to position your hands and fingers in the most natural and comfortable way. After choosing your position, you can play by moving only your fingers, with your hands completely relaxed. This approach minimizes the need of visual control, allows you to leverage your muscle memory, and gives your brain more time to think about the music you are playing.


  • Adaptive interface
  • Chromatic scale
  • 4+ octaves range (8+ with octave shift buttons)
  • Pitch-bend control
  • Modulation control
  • Volume control
  • Repeat button (allows to play same note multiple times faster)
  • Transposition (allows to change root note)
  • 9 built-in sounds.
  • Virtual MIDI and Wi-Fi MIDI output.

Buy Clawtar on iTunes: $5.99

This could be great for people with extra large or small hands. You can see how it scales up and down in calibration.

Reader Comments 2

I LOVE chord up. So naturally, I bought this right away. After a minute of using it, I understood it, it's a simple app. I just can't justify it. I don't understand the purpose of it. It doesn't really make playing easier, just confusing, It doesn't make you play faster, or not think about what you're doing, quite the opposite. This is, dare I say it, a stupid app. Someone please prove me wrong.

May 20, 2016  | person_outline Davant

I guessed it was a kind of lemon (at less in this first version).No scales ,no really impressive functions.I have enough controller with Chordpolypad, synthcaster and navichords.Chordup is good too but nothing mindblowing...

May 21, 2016  | person_outline synth

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