The app is a game where the user guesses four digits. The system compares the guess to opponent digits, indicating "Hit" for correct digits in the same place and "Blow" for correct digits in a different place.
by Satoshi Horiguchi★ 5.02 ratingsGamesFreeData updated 2026-09-24
The app offers practice in addition, subtraction, and multiplication. Users can select the number of digits, questions, and button arrangements for calculation practice.
A 5-letter in 6 attempts. Each letter changes color: grey for incorrect, orange for correct letter in wrong position, green for correct position. Track progress and play for free.
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