Cool game! I think it would feel a little more responsive if you allowed a click anywhere on the screen to count as a chop and allowed the player to chop early before reaching the tree (but within range). I found myself wanting to chop without stopping, but I'd need to wait for the player to stop and then after the chop button would show up, and only then could I chop. Fun though!
Also I think few ratings = either bad thumbnail or short description. Show a little more about the game in both and I think it would increase engagement! Good luck!