In my experience, it's mostly fine, outside of it being awkward to hit the bar in the minigame (And I sometimes miss on desktop too if my mouse drifts a bit too far), and scrolling the inventory screen is awkward - no scroll wheel means that you have to actually drag the scroll bar, which is tiny on a phone screen. I guess that could be fixed by letting you drag on the inventory screen itself, but I consider that to be a pretty minor issue.
Another minor suggestion for both desktop and mobile QOL would be to allow advancing the dialogue boxes by clicking anywhere on screen. But that's another thing I can live without.