Download
You may download this app using F-Droid:
Source code
The source code is on GitHub.
Screenshots
Try it!
If you wish to try it out without creating flashcards of your own first, you may download a sample filing box. It is in German, but you will nevertheless unterstand how the app works. Download here for flashcards without formatting and here for flashcards with formatting.
Changelog
A complete version history is available here.
Website: privacy, contact, licenses
Other projects: herrmann-engel.de