Android Flashcards is an open source flashcard based application to help with learning just about anything. Its goal is to be easy to use and easy to create lessons for.
You can find it on the market here (Link will only work if you're on an android device)
It has a number of useful features which are detailed below. I hope you find this application useful! Click the feedback link to let me know what you think.
Source can be found on github.
Simple Card Review Mode - In this mode you can review all the cards in your deck. You flip the card by tapping the screen and go forward and back by swiping. You can also jump to a particular card hitting the menu key.
Adaptive Memory Game - Android Flashcards isn't just a flashcard review application. It helps you learn by frequently showing you things you didn't know, and waiting longer to show you things the more you get them right.
To use this component of Android Flashcards, simply select "Adaptive Memory Game" from the lesson screen. In this mode, you don't slide the cards left and right, you just tap the card to flip it, and tell the application if you were right or wrong about whatever the card was asking. If you say you were right, Android Flashcards will wait a bit (but not too long) before asking you again, otherwise the card will be shown again quite soon. Each time you get a card right it will take even longer to show up again. The game ends when you've answered every card correctly five times in a row.
Lesson Download - Lessons can be easily downloaded from within the application. A list of lessons is maintained that you can browse and download directly.
Lessons can also be downloaded manually and put on your sdcard. To do this simply download a lesson .xml or .csv file and place it in the "flashcards" folder on your sdcard.
Lesson Creation - Lessons are also easy to create. Android Flashcards understands two formats for lessons. The XML format allows slightly more flexible creation, but is heavier on markup. The CSV is very simple but is less readable (during creation, both formats look the same when running as flashcards).