Pithon is a simple app to help you memorise the digits of pi and improve your memory.
It starts you off with 3 digits and then you're on your own. How far can you get?
When you're playing, you are on a pi marathon on an app written in Python (Kivy), therefore Pithon!
You can shape your own method of learning by using the settings to change the grouping, shift the number or invert the keypad. It also supports tau, e, phi and √2.