Smartr: A Learning Tool
Smartr is a Mac App that can be purchased off the Mac App store for $2.99. This is a flash card based app. There are numerous flash card templates you can choose from. There are vocabulary flash cards to acid or base cards that are question and answer cards. The most outstanding feature is that it learns from your mistakes. What I mean this is that it can test you on your flash cards that you have made. Suppose you get a couple wrong, it will test you on the ones you get wrong more. This is a fantastic app for studying and is available for 2.99 or a free version that limits you to 100 flash cards.