Anki Pro: Study Flash Cards for iPhone

Anki Pro - A Spaced Repetition Learning Program

Anki is a spaced repetition learning program that helps you study new information and master skills. Create flashcards to learn a new vocabulary word, the most important dates in history, and more. The flashcards appear one at a time, and you only need to remember the information for a few seconds before you can forget it again. The flashcards you create and study in the app stay in your Anki Library, where you can refer to them later and find the index card on which you learned them.

The app is very simple and easy to use. The interface is minimalistic, and it's a good example of the power of Anki. Anki Pro allows you to create flashcards and have them organized into groups. 

As well as the basics, you can also choose to add custom fields and sets to your cards. It's a great tool to have for self-exams.