Aerobatic (Super Mario World cape inspired)

Earlier this week, me and my brother launched www.aerobatic.ca for free on iOS and Android. We seem to have problems with day 1 retention, but once a player comes back, it tapers as expected. This tells me that the game itself is OK once you get into it, but there is something wrong with the first impression. Our reviews have also been pretty positive (and not all from friends and family).

I'd be curious as to your guys thoughts and criticism. My immediate concern is that the tutorial is too weak, and maybe players are getting too frustrated with the controls.