Speed calculation

Speed Calc is a simple mental arithmetic trainer for building speed and accuracy. Choose addition, subtraction, multiplication, or division, set the number range and question count, then start practicing with a focused keypad interface. The app tracks your time, mistakes, daily best, and personal best so you can see your progress over time. Features: Addition, subtraction, multiplication, and division practice Adjustable number range, difficulty, and question count Timer with daily best and personal best records Calendar-based practice history Multiple theme colors Optional sound feedback Remove ads with a one-time purchase Speed Calc is designed for short daily practice sessions and focused arithmetic training.