This application that can stock chord progressions.
But it's not just a chord progression memo app.

I think that You have to try your favorite chord progression every time you make a song.
Even if the chord progression is the same, I think there are changes such as “I want to make a song with key D this time” and “I want to make a song with key B this time”.

In such cases, this app will help you create your song!

Open a registered chord progression and swipe once to change all chord progressions composed of C to C # chords. Swipe again to change D. Swipe down to do the opposite.

You can also listen the code sounds, so it ’s useful for thinking from the start.

I hope you can make a good song.

Thanks!