TennisDraw is an Android app developed by melesselem, which calculates the doubles combinations according to the number of players and courts. It covers from 4 to 35 players, from 1 to 5 courts, and displays 20 combinations of doubles matches. The app aims to provide fair pairings and equal rest periods for players. It can also handle changes in the number of players or courts mid-game.

The app is not restricted to tennis but can be used for other sports such as table tennis or badminton. It offers a range of features such as displaying all the pairings, switching to individual player pairings, displaying match results, and emailing the results and pairings. In addition, it allows users to change a particular pairing, the number of players or courts mid-game.

The app is easy to use, and the combinations are displayed quickly. The user interface is simple and intuitive, making it easy to navigate. The app is free to use and is perfect for sports enthusiasts who want to organize a doubles tournament.