Reaction Time Trainer: RS is a free iPhone game developed by Masaharu Tsukamoto. This game is designed to maximize your performance by improving your reaction time. In Reaction Time Trainer: RS, the goal is to tap as many targets as possible within a 30-second time limit.

This game serves as a training application for individuals who want to enhance their skills in games and sports. Whether you're an athlete or a gamer, this app can help you become stronger and more competitive. The best part is that you can play it anywhere, making it convenient to practice during your free time.

Additionally, Reaction Time Trainer: RS allows you to login to Game Center and join the ranking. This feature adds a competitive aspect to the game, motivating you to improve your performance and climb up the leaderboard. Challenge yourself and see how you rank among other players!

Overall, Reaction Time Trainer: RS is a simple yet effective game for anyone looking to enhance their reaction time and compete against others. Give it a try and see how much you can improve!