Mental Maths (introductory price: $0.99) Hi everyone! Today, my new game "Mental Maths" arrived in the App Store. Solve math problems to reveal pieces of the image, make mistakes and see gray parts. Among basic arithmetics there are exercises in percentage calculation, roman numerals and more. There are four difficulty levels, an adjustable time limit and statistics for multiple users. If you like math games and would write a review, ask in this thread. I'll send promo codes to the first 10 people by PM. Have fun!