feelyoursound.com says that IsoPad lets you use your Windows tablet to play any electronic MIDI instrument with your fingers. They tell us that IsoPad is a stripped down version of XotoPad that concentrates on isomorphic layouts to play melodies and hooks quickly. Here's more details in the company's own words...
IsoPad contains three different keyboard layouts. One of them is the familiar piano fingerboard. However, the others are way more suitable for modern touch interfaces. The pads of these so called "isomorphic layouts" are organized in such a way that the interval from one pad to the next one always remains the same.
Many new hardware devices like Ableton Push, Novation LaunchPad, or Roger Linn's LinnStrument use one of these layouts to help you play in a more intuitive way.
This is how it works: Chord shapes will always look the same no matter which root note you use. If you know how to play a C Major chord, you instantly know how to play an A Major chord for example: Just keep your fingers in the same position and move them to the A. The same applies to other chord types and scales. If you know the shape of the C Major scale, you can use that knowledge for D Major, E Major etc. as well.
The following layouts are included: "Iso 1-5" (1 semitone horizontal, 5 semitones vertical; the same layout as the LinnStrument), "Iso 2-5" (2 semitones horizontal, 5 semitones vertical), and "Keyboard" (1 semitone horizontal, 12 semitones vertical).
Pricing and Availability:
Using Chains and automation to switch keyboard setups