Download
You may download this app using F-Droid:
Source code
The source code is on GitHub.
Info
Information about this app is available here.
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