All changes and improvements to Mental Math, newest first. Each entry shows the version, the deployment date and time, and whether it is a new feature or a fix.
First release of Mental Math. Choose addition, subtraction, multiplication, division or a mixed round, then pick one of five difficulty levels ranging from the first numbers for young children to demanding arithmetic for young adults (ages 0–18). Every round has twenty questions and each topic-plus-level combination keeps its own high-score table, with twenty-five boards in total. Subtraction never goes below zero and division always divides exactly, so every answer is a whole number. The quiz model is pure and covered by unit tests, high scores are stored permanently on the server, and the interface is available in English, German, French, Italian and Spanish.