◆ Large Text, Easy-to-Read Brain Training App
Perfect for people in their 40s, 50s, 60s, and seniors.
Easy to operate with large text, simple and clear,
yet a little challenging with “calculation & judgment.”

With simple addition and subtraction plus small decisions,
it looks easy but can be surprisingly tricky.
Not only for seniors—try it if you’re a student or working adult!
(Clearing all stages & reaching the first rank on your first try is tough!)

By repeating simple math and decisions, you gently train:
- Attention
- Memory
- Judgment

A simple brain training app that activates your mind,
perfect for daily refreshment.

At the end of each session, you’ll receive a certificate
showing your current rank—great for fun brain battles too!

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◆ Simple Rules
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[Level 1] Don’t exceed 25! (Add normally, subtract only when over 25)
[Level 2] Don’t go negative! (Subtract normally, add only when negative)

Easy? Hard? Surprisingly, “you’ll use your brain.”
Give it a try!

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◆ Key Points
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- Rules are challenging but not too hard
- Gently trains attention and judgment
- Perfect for daily brain refreshment

Keywords:
Simple brain training app
Brain games for seniors
Senior brain training, mental exercise
Dementia prevention, memory support
Judgment test
Math brain game
Large-text brain training app
Easy brain training app

Train your brain a little every day.
Give it a try today!