Fun gameplay, but controls and crashes aren

I thought it was pretty fun and played for a decent amount of time, getting upgrades. After I got the bow, however, the app started crashing. The controls could use some tweaking; maybe a virtual analog stick would do it well.
Crashes seem to occur only after weapon upgrades. Itll crash after you buy a weapon and continue hunting.

.Link about 3D Hunting™ Alaskan Hunt Plus!