"24 Game-Brain games to make 24" is a world-famous calculations puzzle game app available on iPhone. With over 1,000 different questions provided for free, this game aims to train your brain in mathematics in just 5 minutes a day. The objective is to calculate using four numbers to reach the total of 24.

This app offers the full experience of the renowned Trump computing puzzle, along with features like a "Time Attack" mode for competitive play and the ability to view and compete with global players' scores. Additionally, players can easily grasp the game's concept in Easy mode, utilize the "back function" to revert to a previous state, and skip difficult problems using the "skip function."