Very nice. The UI (on mobile at least) could use some more labels for explanation (or maybe a quick tutorial), but having experience with other beat editors it was simple enough for me to figure out pretty quick: https://apps.musedlab.org/groovepizza/?source=pub&museid=x-b...

I really like the cyclical beat representation. Makes it a lot easier to visualize how everything fits together. Would be neat if more DAWs, drum machines, etc. adopted this layout instead of the normal linear approach.

EDIT: and I only now realized that you can click on the drumset icon in the center of wheel to change the instrument set: https://apps.musedlab.org/groovepizza/?source=pub&museid=q3I...