Flash Mental Math (Anzan)

Flash Mental Math (Anzan) is a fast, fun brain-training app that flashes digits briefly to sharpen quick mental arithmetic and concentration for kids through adults. It supports children aiming for soroban (abacus) certification, school math test prep, and adults seeking brain training, with no sign-in or personal data required.

Key features include finely tuned difficulty (digits, number of flashes, display time) for optimal skill growth, a global ranking system, classroom rankings for friendly competition, and a simple, easy-to-use interface designed for young learners.