Hey, I played your app! First, I have to say I like how simple the concept and interaction is. You just tap to play, and the cat rolls Makes it more likely for someone to keep playing. I like the idea of obstacles, and it's very tricky trying to tap in the right spots with the right timing! You put a lot of work in the graphics and it shows. Very smooth, great sound and animations.
If I had to nit pick, it wouldn't be about the game itself. For example, when you pause the game, I would like to see the buttons that pop up to be bigger. Also, when the level is over, I think the fade to black starts too early and lasts too long...it makes me think my phone is going to sleep or shutting off. Lastly, my guess would be that when a level start screen slides in from the left, you have used the Pin behavior. But it seems like you are pinning things to other objects that are then pinned to something else (because of how they don't slide together). If you pick one thing (such as the menu box image) and pin everything to that one thing (no matter how they are layered), then everything will slide together at the same time. (Actually, maybe you did that on purpose! I'm not sure)
I hope that didn't sound too critical, because I didn't mean for it to be! These are just small things that took me out of the experience, and if they were changed, it would be a cohesive overall experience. It's a great little game that you put a lot of work in to. (I also like the slot machine aspect, it's a great monetization tool)