About this app
See the numbers. Remember them. The moment you tap "1", every other number hides. Tap them in order from memory alone. Each success adds another number — until you find your limit. In a famous Kyoto University study, chimpanzees breezed past level 9. Can you beat a chimp? Features • Learn in 3 seconds, challenge forever • Your level IS your instant memory — share your score card • 100% offline, no login, no signup • Fast, lightweight, dark design • English, Korean, Japanese
Latest release
What’s New
Your records now keep time. Same level, but how fast you cleared it is saved too. The classic rule that kept confusing people is gone.
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 Aug 21, 2026 · 12:08 AM Free
Screenshots
