Crack the Safe: Code Logic

Crack the safe with nothing but a few lines of clues.

Each clue shows a guessed code and how close it was:
- Right digit, right place
- Right digit, wrong place
- Nothing is correct

Combine the clues, narrow down the candidates and find the one and only code. Every puzzle is verified to have exactly one solution, with no wasted clue.

FEATURES
- Challenging from the very first chapter
- 4 vaults, 2,000 puzzles: Cash Box (3 digits), Hotel Safe (4 digits), Underground Vault (repeated digits), The Legendary Safe (5 digits)
- Extra clues in later vaults: which digit is larger, even or odd sum, repeated digits
- Memo board: mark each digit and position with O or X to organize your reasoning
- Daily Vault: the same puzzle for everyone, every day, with a streak counter
- On your first wrong answer, the contradicting clue is highlighted
- Light and dark themes

FREE TO PLAY
- All 500 Cash Box puzzles (3 digits)
- All 500 Hotel Safe puzzles (4 digits)
- The Daily Vault, every day
The free version shows ads.

PREMIUM (ONE-TIME PURCHASE)
- Unlocks 1,000 Underground Vault and Legendary Safe puzzles
- Removes banner and full-screen ads
- Digit hints without ads
- Restore purchases from Settings