This is a mental math game that can be played on your phone. It is intended for children attending first grade and for those children or seniors who want to improve their math performance by performing additions with different levels of difficulty. The game consists of an interactive interface that allows the user to perform mental math operations and to answer addition and subtraction questions. It is based on the idea that most children learn to add by performing addition in their head, that is why this game allows the user to perform all kinds of additions and subtractions without using a pen and paper.