Flash mental calculation vs Flash Mental Math (Anzan)

This app that you can practice flash mental arithmetic. You can review the calculation process by tapping the confirmation button after calculation. In addition, since the question which was made is saved in the past log, you can rechallenge the mistaken problem later. The past logs are saved for 10 questions before purchase, and 150 questions can be saved after purchase. ■ Past log Challenge mode, practice mode questions and results are automatically saved. Touch the challenge button to re-challenge the question. The past logs are saved for 10 questions before purchase and 150 questions are stored after purchase.

"Enjoy learning! Flash mental arithmetic app for kids to adults" Boost your calculation skills with flash mental arithmetic! Numbers flash on the screen briefly, training your quick thinking and concentration. ■Recommended for: - Children aiming for soroban (abacus) certification - School math test preparation - Adults looking for brain training and speed calculation ■Features: - Finely tuned difficulty levels (digits × number of flashes × display time) for optimal skill development - Global ranking system - Create classroom rankings for friendly competition! - No personal information required, no account registration needed for safe use - Supports Japanese, English, German, Spanish, French, Italian, Korean, and Chinese ■Ease of use: - Simple and intuitive interface, easy for children to use Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/