Math Quiz Game app is a math-based application that challenges users to improve their mental calculation abilities in four different types of quizzes - addition, division, multiplication, and subtraction. Each quiz consists of a set of questions that users have to answer within 30 seconds, making the experience fast-paced and exciting.

To add an extra layer of challenge, users only have three lives to start with, and incorrect answers result in the loss of a life. The app also provides a grading system based on the user's final score, with A+ being the highest grade and D+ being the lowest.

By offering different levels of difficulty and a range of quiz types, Math Quiz Game app is suitable for players of all ages and skill levels. It's a great way to sharpen mental arithmetic skills and compete against others to see who can achieve the highest score.