Anki - Anki is a program which makes remembering things easy. Because it's a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn.

Quizlet - Quizlet allows you to review and create flashcards for a variety of subjects, such as math and reading.

Memoru: Flashcards - Ace your studies - with Memoru flashcards!

Recall App - Recall helps you remember the things you are interested in

Recall Cards - Flashcards application for efficient learners.