I just love this! The music is superb, the game is simple and relaxing, not too short, not too long and even the name is simple. I mean COINS! you don't even know what you are getting into until you play it.
Ok it's a solid idea for a first game, you should try to figure how to add more things. For example checkpoints, save or stuff like that, I went over parts of level 1 many times and I always get killed!!! It's a bit frustrating to start all over.
Good luck on this! I will definitely try it again if you improve it!
Turns out that's a plus and a minus. It's nearly impossible to find this on any mobile appstore with that name :( Glad you liked it though!