Yak Tack - remember. words.
Technology Logo Memory Game - How many technology can you guess right?
SmartCards+ - Spaced Repetition Software for iOS. Modern, powerful and easy to use.
Color Match - Simple color memory game.
memordo - Spaced repetition tool to help you retain more knowledge
Zorbi - Spaced-Repetition Flashcards - Other tools are built by boomers, Zorbi is built by students.