About this app
Practice flash anzan on your own—fast rounds, clear feedback, no clutter. Pick digits, how many numbers, and how long each stays on screen, then tap Start. Numbers appear one by one. After the last one, enter a single total to score. Correct and incorrect answers use marks and sound, and a session score stays while the app is open. Cancel mid-flash and that round is not counted. Closing the app clears the score. No accounts, no network, no purchases. Works on iPhone and iPad. The UI follows the device language (English / Japanese).
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Sep 9, 2026 · 8:04 AM Free
Screenshots
