Brain training in 5 cognitive areas for all ages Free practice · 5-question challenge · score accumulation

4s in · 7s hold · 8s out 4 cycles to calm

Tap when the orb peaks Calm rhythm — accuracy is not the point

Spot the slightly different one of 9 Each level harder

Two-saju compatibility by manseryeok Score + today's flow

Target date + label D-N / D-Day / D+N auto

A line a day + mood Look back via calendar · mood flow · recall

Roll when you're unsure 1~6 / Yes·No / 1~100 modes

Track food expiry Auto-sort by urgency, ≤3d/≤7d markers