It's looking great from what I've seen so far on the windows version. I do think the 9 euro's for the Android version is a bit steep for something without a demo.
Any plans for a demo maybe? It's a bit hit or miss for me whether a touch-screen interface works for me. But if it's intuitive enough that 9 euro's are nothing.
Also, I wonder if you plan on not supporting a native Linux version, but maybe support a version which you package with Proton or Wine yourself?
And lastly: It would be AMAZING if you'd add Synth_Dexed as an instrument. I've been playing with that lately and it's great. Plus, being able to use existing carts as presets is really great: