Train Numbers is a free Android math game developed by aprofessionalpirate. The game consists of using basic math operations to reach a target number, which is usually 10. The challenge is to achieve the target number using only four given numbers, which are often the carriage numbers on a train.

The game interface is simple and easy to use. The app calculates all the possible combinations of the given numbers to reach the target number, making it a great exercise for improving math skills. Train Numbers is a useful app for people of all ages who want to improve their mental math abilities.

Overall, Train Numbers is a well-designed game that offers a fun and challenging way to improve math skills. The app is free to download and use, making it an accessible option for anyone who wants to exercise their brain in a fun way.