Bit-le
The bitting logic puzzle
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Crack the daily six-cut bitting puzzle using logic, deduction and locksmith skills. Take on the worldwide Daily Challenge or keep cracking with unlimited Free Play.
Can you crack the bitting?
Bit-le is a daily logic puzzle inspired by the world of locksmithing, keys and lock depths.
Your challenge is simple: discover the secret six-cut bitting in six attempts or fewer.
Each guess gives you clues:
BRASS means the depth is correct and in the correct chamber.
NICKEL means that depth exists in the solution, but belongs in another chamber.
GREY means the depth isn't part of the solution.
Use the clues, eliminate possibilities and work your way towards the correct bitting.
But there's another catch. Your bitting must obey the Maximum Adjacent Cut Specification (MACS). Bit-le uses a MACS value of 7, so adjacent cuts cannot differ by more than seven depths. Invalid combinations won't cost you an attempt, but you'll need to correct them before continuing.
DAILY CHALLENGE
Everyone receives the same Daily Challenge. Solve it in as few attempts and as little time as possible, then see how your result compares on the worldwide daily leaderboard.
You get one official Daily Challenge result each day, so make those six guesses count.
FREE PLAY
Want another lock to crack? Free Play generates additional puzzles so you can keep testing your deduction skills.
If you get stuck, Free Play also includes a limited number of assists that can provide a hint or reveal a cut.
TRACK YOUR PROGRESS
Bit-le keeps track of your Daily Challenge statistics, including games played, games solved, success rate, best result, average attempts and solving streaks.
BUILT FOR LOCKSMITHS, BUT OPEN TO EVERYONE
If you understand key bittings and MACS, you'll feel at home immediately. If you don't, Bit-le is an entertaining introduction to the logic behind them.
There are no complicated accounts to create. Pick your cuts, submit your guess and start cracking.
Bit-le is developed by Locksdownunder.
Bringing It All Together.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Tony Steward, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Tony Steward
- Size
- 3.7 MB
- Category
- Puzzle
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Tony Steward