This app allows you to freely create chord progressions by freely arranging related scales.
Just touch the screen to start playing. It's a chord app that opens up a world of new inspiration.


I wanted a tool that would allow me to devise chord progressions freely using chords that I am not habituated to on my favorite instrument.
Typing into a DAW and listening to it over and over again is not very efficient.
The Cordpad will open up endless possibilities for creativity.

It can also be used for educational purposes for those who are familiar with chord theory as well as for children who are not familiar with the theory.
I hope that a child who encounters Cordpad will become a great writer in the future.


・Change the time signature.
・Change the key.
・Switch chord names and degree notation.
　(Degree notation for both major and minor keys is supported.)
・Switch between major key, minor key, and relative key display in the palette.


・Switch between displaying and hiding related scales such as diatonic, Sus4, tritone substitution, parallel major minor, passing diminish, etc.
・Save the display status.