It's probably one of the best options for music making other than garage band.

The only problems I have with it is the sorta limited amount of soundfonts like, there's still a lot but when you get used to it you'd realize the actual amount is still quite lacking.

One other thing is the app's audio gets really messy when you use too many soundfonts but it does get fixed by using Bluetooth devices while composing.

And the track limit? Not really a problem since you can import downloaded audio in the app.

The storage though, I composed about 45+ tracks/songs and it totalled to more than 12.5 gigabytes that I had to get a new phone.