Scopa 15 (Escoba de 15) is a card game variant of the popular Italian game Scopa. The objective of the game is to capture cards by summing up to 15 points. The app includes the French, Italian, and traditional Spanish playing decks, making it a versatile option for players.

The game is easy to understand and provides a thorough resume of the rules. It also supports global leaderboards, allowing players to compete with others around the world. The experimental support for accessibility with TalkBack is a welcome addition, making it easier for visually impaired players to enjoy the game.

Overall, Scopa 15 is a great tool for improving mathematical skills while having fun. Plus, being a free app on Android, it's accessible to everyone who wants to play a fun and educational card game.