Simply record questions and answers using the app and the app will automatically generate audio lessons to help you memorize the information.
Warning: Do not use this if you want to forget the information later. The app will repeat the questions and answers using a pattern based on Graduated Interval Recall, a system released by Pimsleur in 1967. It is like audio flashcards with an SRS (spaced repetition system) built in. Pimsleur used this technique to teach foreign language vocabulary, but the method is great for other kind of information too.
One of great things about audio lessons vs flashcards is you can learn with your phone in your pocket. No need to push buttons while driving, walking, running, or doing daily chores.