Chalkline: Deduction Puzzles
A daily murder logic puzzle
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
A murder has been committed. Everyone in the building was standing somewhere when it happened — and exactly one of them was alone with the victim.
Chalkline gives you a floor plan, eight suspects and a handful of statements. Work out where every single person stood, and the killer reveals themselves.
HOW IT WORKS
Each suspect tells you one true thing. "He was next to a TV." "She was alone with Carla." "He was exactly two rows north of Ivo." Cross-reference the statements, place everyone on the map, and only one arrangement can possibly be true.
Then apply the one rule that matters: the victim was alone with exactly one person. That person did it.
NO GUESSING, EVER
Every case is checked by a solver that only makes moves a person could make on paper. If a case is in the app, it can be reasoned out from start to finish — no trial and error, no lucky guesses, no dead ends. Difficulty is measured by how much deduction a case genuinely takes, not by how many clues we deleted.
WHAT YOU GET
• 60 cases in the archive — 20 easy, 30 medium, 10 hard
• A brand new case every single day
• 12 locations: a mansion, a hotel, a yacht, a museum, a cinema, an office, a gym, a campsite, a bowling alley, a car dealership, a burger joint and an electronics store
• Hints that teach instead of spoiling: they tell you which suspect to work out next and whose note holds the answer, so you still make the deduction yourself
• A streak for solving the daily case
• Finished cases stay in your files, and you can replay any of them
• Complete in English and German
• Plays entirely offline — no account, no sign-up, no connection needed
FOR PEOPLE WHO LIKE
Logic grid puzzles, nonograms, sudoku, cryptic crosswords, locked-room mysteries, and any puzzle where the answer is provable rather than plausible.
Chalkline is free to play. One optional purchase removes ads forever.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
1.2.0: no case left behind.
Leave a case halfway and your board, clock and hints are waiting when you return. Case files now start easy and grow harder, every case has its own title, and new daily cases lean on fewer "north of" clues. Plays with VoiceOver and TalkBack, fits iPad in landscape, and clearer clue wording in English and German.
The developer, Denis Cencig, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Denis Cencig
- Size
- 32.6 MB
- Category
- Puzzle
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and German
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Remove Ads $4.99
- Copyright
- © 2026 AmazingLab Studio. All rights reserved.