Bulls, cows, and clean deduction

Crack the hidden number.

Bulls & Cows Logic turns the classic 4-digit code-breaking game into a focused iPhone and iPad puzzle. Enter a guess, read the A/B clue, and let automatic hints narrow the search without taking the solving moment away from you.

Get support See how it works
4 digits Unique-digit secret numbers
A/B clues Exact and misplaced matches
Local play No account, ads, or tracking
Bulls & Cows Logic game screen with guesses and automatic hints.
Live guesses, recent results, and deduction hints in one place.
Solved game screen in Bulls & Cows Logic.
Finish a round and see the result clearly.
Game history screen in Bulls & Cows Logic.
Review past rounds whenever you want.

A small game with useful thinking tools.

The app stays close to the rules of Bulls and Cows, then adds lightweight assistance for players who want a smoother path through the logic.

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Clear A/B feedback

Each guess shows how many digits are correct and how many are in the correct position.

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Automatic deduction

Hints summarize possible answers, fixed positions, required digits, and excluded digits.

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No clutter

No sign-in, cloud account, ads, or tracking. Rounds and history stay on your device.

Built for iPhone and iPad.

The same compact puzzle flow works across screen sizes, with enough room for the full result list and the current deduction state.

Bulls & Cows Logic running on iPad.
The iPad layout keeps guesses, clues, and hints easy to scan.