Can you crack the code?
A secret code is hidden. Each clue shows a guess and its pegs. Compare the clues, take notes, rule out the impossible and find the only code that fits. No guessing, no luck: just logic.
- Free download, with ads and in-app purchases
- Android 8.0+ · iOS 15.0+
- Game in English
See it in 25 seconds. A board of clues in words, cracked step by step, then a new code for you.
What the trailer shows
A board of three clues in words (3 7, 3 2 and 7 4) appears next to the question “Can you crack the code?” and a closed padlock. A finger underlines the key words of each clue and plays as in the game: “Nothing is correct”, so the 3 and the 7 are crossed out; in 3 2, one digit is correct and well placed, so the 2 goes in the second slot; in 7 4, one digit is correct but wrongly placed, so the 4 goes first. The code 4 2 is cracked and the padlock opens: “Code cracked! Just logic.” Then a new board appears with “A new code. Your turn!”: the finger crosses out the digits of “Nothing is correct”, hesitates over the others and leaves the rest to you. It ends on the Dyslock icon, “2,800+ logic puzzles” and “A new case every day”. Music only, no voice.
Three pegs, one code
Each clue is a guess. Its pegs count how good that guess is, without saying which symbol is which. That’s the whole game.
Well placed
One symbol of the guess is in the code, at the right place.
Misplaced
One symbol is in the code, but somewhere else.
Not in the code
One symbol is not in the code at all.
Try a real puzzle
This is the game’s Easy-1 puzzle; in the app, its digits may be different. Stuck? Ask the chick for a hint.
- Clue 1: 5 1 9.1 digit is correct and well placedcontradicted by your code
- Clue 2: 7 3 5.1 digit is correct and well placedcontradicted by your code
- Clue 3: 1 6 3.2 digits are correct but wrongly placedcontradicted by your code
- Clue 4: 5 9 2.Nothing is correctcontradicted by your code
Everything a detective needs
2,830 puzzles
6 difficulty levels, from Beginner to Master, with codes of 2 to 6 symbols. Finish 10 levels of Beginner, Easy or Medium to open the next difficulty; Expert and Master come with the full game.
Notes on the board
Mark a symbol as out, in the code, well placed or misplaced: the mark follows it in every clue. Eraser, undo and redo included.
Hints that explain why
Stuck? The hint shows the next logical step, and the detective chick tells you why it’s true.
Learn in one minute
A playable tutorial teaches you the rules step by step, and the How to play sheet is one tap away in every level.
A new case every day
The same puzzle for everyone, every day. Crack it fast to climb the ranking of the best detectives.
20 symbol sets
Digits, letters, colors and runes from the start. Win tiles as you play to collect fruits, animals, dinosaurs, space, smileys and more.
Make it yours
Blue or dark theme, three peg styles, tiles colored by your notes, vibrations on or off.
Phones and tablets
Android phones and tablets, iPhone and iPad. Played in portrait.
A look inside
Scroll sideways to see all the screens.
A new case every day
- The same puzzle for every detective, every day.
- The fastest time wins. Each wrong code adds 20 seconds.
- Only your first solve of the day counts, and times are checked by the server.
- See yesterday’s final ranking and build your record: cases solved, best rank, podiums, streaks.

320 puzzles for free
All the Beginner and Easy levels, plus the first Medium and Hard ones, are free. A single purchase unlocks the other 2,510 puzzles, Expert and Master included, and removes the ads. No subscription.
You can also just remove the ads. Your purchases can be restored on a new device with the same App Store or Google Play account.













