Bouncy is a simple, joyful little app: fling a ball across your screen, and
watch it bounce off the walls — playing a cheerful musical note each time it
hits.

Every bounce produces a tone from the diatonic scale, so the ball essentially
plays a little tune as it moves around. A visual effect (powered by Android's
AGSL shader language) that changes by each wall hit.

That's the whole app. No levels, no score, no accounts — just a ball, some
physics, and a bit of music.

Features:
* Fling the ball with a swipe and watch it go
* Each wall bounce plays a note from the diatonic musical scale
* Smooth, realistic physics using Android's FlingAnimation
* Visual glow effect rendered with AGSL distance field shaders
* Extremely lightweight: the entire app is under 18 KB
* No internet connection, no ads, no tracking, no permissions