Very neat concept! I was worried a bit at the beginning before I got the gyroscope, but once I got that and the controls were actually meaningful, it was the right mix of fun and frustrating to control.
I really enjoyed how the map slowly opened up as I could travel further and further. I think the idea could work if fleshed out a bit more. Sound Effects will also probably add a lot.
In case you'd like to know, I had all but around maybe 5 items unlocked (but not necessarily bought) and 6RPM upgrades, but the game crashed shortly after picking up what seemed like that last item I could find on the map.