脳トレ 計算ジャッジ!

This is a mental arithmetic and brain-training game where you quickly use True or False to determine whether the mathematical expressions displayed on the screen are correct or incorrect.
Progress through addition, subtraction, and multiplication. With a level system, time tracking, best time updates, and rankings, it's perfect for daily brain exercise.

How to Play

Example: "10 + 22 = 32" (correct answer) / "9 + 9 × 2 = 24" (incorrect answer)

Simply tap True if the displayed formula is correct, or False if it's incorrect.

Once you've answered all the questions, your clear time will be displayed. Answer all questions correctly to earn ranking status.

Each play is short. Use your spare time to hone your concentration, calculation skills, and judgment.

Level Structure

Difficulty increases gradually. Start with single-digit addition, then once you've mastered it, move on to multiplication and subtraction, and then trinomial calculations. Finally, test your overall ability at LEVEL MAX!

・Level 1: Addition / Single-digit x 2
・Level 2: Multiplication / Single-digit x 2
・Level 3: Addition / One- to Two-digit x 2
・Level 4: Addition (One- to Two-digit) + Multiplication (One-digit)
・Level 5: Addition/Subtraction / One- to Two-digit x 3 (e.g., 14 + 5 - 3)
・Level 6: Addition/Subtraction/Multiplication / Single-digit x 3 (e.g., 5 x 9 - 4)
・Level 7: Multiplication / One-digit x Two-digit (e.g., 3 x 14)
・Level 8: Addition (One- to Two-digit) + Multiplication (One-digit x Two-digit)
・Level 9: Addition/Subtraction/Multiplication / (Addition/Subtraction: One- to Two-digit, Multiplication: Single-digit) x 3
・Level 10: Multiplication / Two-digit x Two-digit (e.g., 11 x 14)
・LEVEL MAX: Addition, Subtraction, and Multiplication / 1-2 Digits x 3 (Comprehensive Ability Test)

Features

- Simple 2-Button: Only True/False. Intuitive controls make it easy for anyone to play.
- Brain Training Elements: Evenly stimulates mental arithmetic, mental calculation, working memory, processing speed, and judgment.
- Time Attack: Save your best time to your device. Updates are clearly displayed with special effects and colors.
・Online Rankings: Rankings are posted when all questions are answered correctly.
・Difficulty Levels: Single-digit to double-digit, binary to trinomial, and the addition of addition, subtraction, and multiplication keep you learning.
・Comfortable UI: Light/dark theme, sound effects volume adjustment, and vibration on/off.
・Mobile Optimization: Portrait mode, notch, and safe area support. Smooth one-handed operation.
・Short Play Times: Perfect for short periods of time while waiting for a train or taking a break.

Recommended for:

・Enjoy mental arithmetic and calculation games/want to practice arithmetic operations
・Basic math training for elementary school students through adults
・Brain training/mental exercises for focusing on daily habits
・Try to beat your personal best in time attacks and rankings
・Try to improve your reflexes and quick decision-making in a game-like manner.

Notes

This app is a casual game intended as a learning aid and brain training program. It does not guarantee any medical benefits or specific learning outcomes.

Some features (such as the online rankings) require an internet connection.

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