Code Master

Content rating
Everyone
10+
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Content rating
Everyone
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About this game

Think you can crack the code?

Welcome to Code Master, the premier digital arena for fans of cryptograms, logic puzzles, and classic brain training. If you enjoy the thrill of being a code breaker, our app offers a sophisticated mental workout designed to sharpen your focus and deduction skills.

The Challenge: Decipher the Hidden Sequence Code Master is a modern, high-stakes evolution of the timeless "Bulls and Cows" (1A2B) game. Your mission is to decipher a hidden 4-digit secret code using pure logic and strategic guessing. Every move counts in this battle of wits.

How to Play (The Rules of Deduction):

The Secret: The system generates a unique, randomized 4-digit encryption.

The Guess: Input your 4-digit sequence to test the cipher.

The Feedback (Bulls & Cows):

Bulls: A digit is perfectly placed and correct.

Cows: A digit exists in the code but is in the wrong position.

Example: If the secret is 4271 and you guess 1234, you receive 1 Bull (the '2') and 2 Cows (the '4' and '1').

Key Features for Mind Gamers:

🧠 Advanced Brain Training: Improve concentration, pattern recognition, and memory retention with every session.

🔢 4-Digit Logic Puzzles: The ideal difficulty curve for both casual puzzle solvers and hardcore mastermind pros.

📊 Performance Analytics: Track your progress with detailed stats to lower your turn-count and beat your personal best.

✨ Premium Minimalist UI: A clean, distraction-free interface that allows you to focus entirely on solving the cryptogram.

📱 Offline Mode: Solve secret codes anywhere, anytime—no internet connection required.

Are You a True Mastermind? Code Master is more than just a game; it is a comprehensive digital workout for your brain. Whether you call it 4-Digits, 1A2B, or Bulls and Cows, this app brings the classic pencil-and-paper experience into the modern age.

Download Code Master today and join the community of code breakers!
Updated on
Feb 7, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Content rating
Everyone
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App support

About the developer
Eyal Ben Abraham
eyal@framework.co.il
United States