The very refreshing brain trainer app.
More than 1000K downloads!
A fun way to train your brain and build up math skills.
A recommended way to prevent dementia and Alzheimer's disease.

Increasing popularity!
Train your brain with HAMARU

For those who like brain trainer, want to prevent brain aging and dementia.
User-friendly brain trainer and brain teaser!

Brain Test & Free Training Games!
Offline & no WIFI