The Ultimate SaaS Quiz - Challenge your friends and improve your SaaS knowledge
SmartCards+ - Spaced Repetition Software for iOS. Modern, powerful and easy to use.
Color Match - Simple color memory game.
Zorbi - Spaced-Repetition Flashcards - Other tools are built by boomers, Zorbi is built by students.
FlipToMind - Space repetition app to help you remember everything
Harken - Flashcard app using smart repetition to improve your memory