⬇ 10+ downloads
Est. actual: 46
Style: Educational
Free
Released: Dec 9, 2017
No in-app purchases
No ads
- 📈Installs no measured change since Oct 5 (1 days)
- 🛠Updates quiet · updated 43 days ago
Installs since launch
0 installs
since Oct 5
Update history
4.1
Aug 24, 2026 · seen Oct 6, 2026
系統更新
Only the current version so far — new entries appear as the game ships updates.
Mental arithmetic problem, shown by flash count (plot), to listen to an operator exercises Edit Paper +
