두뇌 훈련: 멘탈 수학 트릭

Sep 23, 2026

v3.53
fixed some bugs
v3.52
Now you can solve examples step-by-step
v3.48
fixed day streak bug increment
v3.46
Implemented rewarded ads
Project structure redesigned (transition from activities to fragments)
Better performance
Fixed alarm-related bugs
Implemented Rewarded Ads
v3.36
- Fixed some bugs
- Implemented Challenges Alarm Clock
v3.31
- Implemented daily streak notifications
v3.28
- Implemented core analytics