TacticsTempo is a free Android game developed by Dmitry Lamdan, which aims to help players improve their chess tactics skills. The game offers a variety of features, including solving tactics, trying different solutions after the problem is finished using Stockfish, and full engine analysis lines for top 5 moves (for Gold members).

Users can select problem sets from Standard, Blitz, or Mixed sets, and even create custom problem sets if they have a Gold membership. The app also allows users to see their current rating and rating change, view problem details such as ratings, tags, and quality, and vote on tags and quality ratings.

Players can view comments left by other users on the problem and even access a common mistakes list on each problem and their previous results (for Gold members). Additionally, the app provides a problems history feature, which allows users to view problems from their history and analyze them with Stockfish.

Lastly, the app offers board color and piece image options, which allow players to customize their experience. Overall, TacticsTempo is a great tool for chess enthusiasts who want to improve their tactics skills in a fun and engaging way.