I agree with @Rasco, changing countdown to timer could be nice.
P.S. I don't have android phone, so i have to play in unity editor :)
Try to make WebGL build: it is pretty simple to do in Unity...
Wow you actually took all the hassle of downloading the code and playing it in editor (my dirty code got exposed :-P)
Yes the idea of making a web build came after the jam has begun and when I did so some UI elements lost their alignment and I didn't have much time to fix it. Will make note of it for future.