Alpha Tsumego is an Android app developed by BG Play that offers a collection of over 6500 Go problems ranging from 30 kyu to 6 dan. It includes problems for both beginners and master players to improve their understanding of the game.

One of the app's main features is the daily problems from different sets, which allows users to practice their skills every day. Additionally, the built-in rating system determines the user's level and provides a personalized experience.

The app covers various game aspects, including Life and Death, Tesuji, Semeai, and Attack and Defense. By solving Go problems for at least 10 minutes every day, users can improve their skills and eventually play Go stronger than the legendary program AlphaGo.

Overall, Alpha Tsumego is an excellent app for Go enthusiasts looking to improve their skills and understanding of the game.