About this app
Play rock paper scissors against your iPhone! The more you succeed, the more the referee will reduce your remaining time, so think quickly... (Did you know? Janken would have originally meant "stone game" with the pronunciation Jakuken (じゃくけん) now Janken.)
Latest release
What’s New
- Added CPU impatience animation
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 4, 2026 · 5:40 AM Free
Screenshots
