Pi Trainer: Learn Pi

No boring keypad! Choose from a circle of random numbers. Only one will be correct. This app is more interactive and fun than other training apps. Learn and memorize Pi using this fun and interactive app! Modes you can choose between: -Standard (No timer or penalties) -Spitfire (Timer counts down. Get number right to reset timer.) -Time attack (Timer counts up. Don't mess up or its over!) You decide the number of options to choose from: -2 number choices -3 number choices -4 number choices -6 number choices -8 number choices Other bonuses include: -Start at any digit you choose within Pi. -Pi digits appear in background as they are solved. -Hold down center circle to hide choices. Great for learning Pi. -Night and Day themes.