Osawa

Osawa

An engineer building small, useful apps.
All activity
Train your brain in just 1 min a day! BrainBooster uses N-Back training to boost memory, focus, and thinking speed. With simple design, global rankings, and adjustable levels, it’s fun, effective, and great for improving productivity and mental sharpness.
1-Min Brain Training Game, Brain Booster
1-Min Brain Training Game, Brain Booster1 min/day with the perfect and simple memory × math workout.