Chalk: Nonogram, Shikaku

Daily Sudoku, Picross, Logic

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

2643 puzzles: Sudoku, Nonograms, Slitherlink, Shikaku and number paths, plus four board games for two. Every one has exactly one solution. No account, no internet. Chalk is a small collection of logic puzzles and board games: sudoku, nonograms, slitherlink, shikaku and number paths, with four board games for two. No accounts, no sign up, no timers pushing you along. Open it and play. NINE GAMES, 2643 PUZZLES Sudoku. 412 puzzles across 4x4, 6x6 and the full 9x9, rated easy to expert. Pencil marks are built in, and placing a number tidies it out of every square it rules out. Nonograms, the puzzle also called picross, griddlers or hanjie. 125 picture puzzles, 5x5 up to 15x15. The numbers say how the filled squares are grouped, and a picture comes out of it. Slitherlink, sometimes called loop the loop or fences. 125 loop puzzles, 5x5 up to 10x10. Draw one closed loop so that every number has exactly that many lines around it. Stitch. 515 number path puzzles. Draw one line from 1 to the last number, passing through every square exactly once. Boards run from a gentle 3x3 up to a proper 8x8. Shikaku, the Japanese rectangle puzzle. 1466 puzzles, 4x4 up to 10x10. Cut the grid into rectangles, one number in each, where the number says how many squares that patch covers. Tic Tac Toe (noughts and crosses), Four in a Row (connect four), Dots and Boxes and Hex. Four board games for two people, and you decide who the second seat belongs to. TWO PHONES, NO INTERNET Play someone sitting next to you on their own phone. Chalk finds the other phone over wireless, or sends the moves as a short chirp through the speaker, which works between any two phones with no account, no pairing code and no connection of any kind. Or pass one phone between you. Or play Chalk itself, at Easy, Fair or Ruthless. Who opens is a setting rather than a rule: you, Chalk, or take turns, where the loser of the last round starts the next. EVERY PUZZLE IS CHECKED All 2643 puzzles were generated and then verified by computer to have exactly one solution. No guessing, no dead ends, no puzzle that turns out to be impossible halfway through. BUILT TO BE CALM Two looks: bright marks on a dark board, or cream and sand. Both follow your phone's light and dark setting. Hide the clock if timing feels like pressure. Turn off the buzz if you would rather it stayed quiet. Keep your favourites at the top of the list. Every puzzle remembers your best time and picks up exactly where you left off, down to the clock. Every board game keeps the running score. PLAY ANYWHERE There is no account and nothing to sign up for. Every puzzle is already on your phone, so the games work in a tunnel, on a plane, or with the wifi off. WHAT IT COSTS Chalk is free, and shows advertising. One payment removes the ads for good. It is not a subscription: nothing renews, nothing expires, and there is nothing to cancel. The unlock follows your store account, so Restore purchase brings it back on a new phone. Terms of use: https://chalkpuzzles.app/terms Privacy policy: https://chalkpuzzles.app/privacy Contact: https://chalkpuzzles.app/contact Questions of any kind go to support@chalkpuzzles.app, and a person reads them.

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Lantern, for Halloween: aubergine and pumpkin, with stars and a moon at night, sun and falling leaves by day, and pumpkins whose candles flicker behind every board. It comes on by itself in October if you never picked a look, and Settings changes it back. What's new, in Settings: everything Chalk has told you, in one list. Badges: every game has four stages to earn, Sketched to Finished, and a rank across all nine. Beat Ruthless for the top ones, then share a badge. New here? The first board offers a thirty second lesson, and home starts you on three small puzzles. Lose to Ruthless and see the move that decided it. A satisfied clue goes faint in Nonograms and Slitherlink. Share Chalk from Settings: the link opens in your friend's language.

Version 1.1.2

The developer, Catalin Gabriel Miron, 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

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
Catalin Gabriel Miron
Size
79.1 MB
Category
Puzzle
Compatibility
Requires iOS 16.4 or later.
  • iPhone
    Requires iOS 16.4 or later.
  • iPad
    Requires iPadOS 16.4 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.
Languages
English and 8 more
  • English, Czech, French, German, Polish, Portuguese, Romanian, Russian, Spanish
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 ChalkPuzzles.app
  • Developer Website
  • Privacy Policy

    • More by Catalin Gabriel Miron

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