BetterMemo

BetterMemo has a simple, yet powerful concept. It is called spaced repetition learning.

Spaced repetition is a learning technique in which increasing intervals of time are used between subsequent reviews. Scientist have found that by studying this way, people actually remember more information, compared to when they repeat the same information again and again...

This way of learning also saves you time, because you have to review the information less often, than when learning in the traditional way.