Doppelkopf Zettel is a free Android app developed by Nils that helps you keep track of the score during your Doppelkopf games. The app supports Doppelkopf variations with 4, 5, or 6 players and allows for the exclusion of players, with a maximum of 8 players in total. It also supports Bock rounds, including automatic calculation, with the option to set the number of new Bock rounds.

The app offers three counting variants, and you can add players during a round and edit the last game for corrections. There is an accounting view for the end of the round, and the app automatically saves the game progress. You can even export the game progress as CSV files or data via email, which allows for importing into Excel for analysis.

Doppelkopf Zettel is optimized for Android 6 and display (5.2" - 1920x1080) and requires permission for SD-card access to save the game progress. The app is ad-free and does not require any unnecessary permissions.

Overall, Doppelkopf Zettel is a helpful app for Doppelkopf players who want to keep track of their score during the game. The app is easy to use and offers various features to enhance your gaming experience.