Hi Tom, I've just tested it on Android. I like your game.
I think you should improve game manager, add lives, there is only one try. Should be more in my opinion.
Starting countdown (3,2,1, go or something) could be a nice idea, so player can be prepared for the action.
Waiting time to start level (loading scene in unity?) is considerably long (more than a 3 seconds on my devices). That is not good.
Game icon is great.
I love pixelart in this game.
Also, how about customizing controls for mobile devices, not everyone likes tilting.