Pencil Logic: Slitherlink

Masyu, Nurikabe, Hashi & more

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

Seven classic Japanese pencil-logic puzzles in one app. Infinite generated boards, a daily challenge, undo, hints, and dark mode. Ad-supported; remove ads anytime. Pencil Logic is an offline collection of seven classic Japanese pencil-logic puzzles: Slitherlink, Masyu, Hashi (Hashiwokakero), Nurikabe, Futoshiki, Shikaku and Kakuro. Every board is generated on your device with a guaranteed unique solution, so there's always a fresh puzzle waiting, no wifi needed. Free to play with ads; a one-time purchase removes them for good. SEVEN PUZZLES, ONE APP • Slitherlink: draw one loop through the dots so each number says how many of its sides the loop uses. • Masyu: draw one loop through every pearl, straight through white pearls, with a turn at black ones. • Hashi (Hashiwokakero): connect every island with bridges matching its number, no crossings. • Nurikabe: shade one connected wall so each number is an island of exactly that many cells. • Futoshiki: fill the grid with 1 to n, obeying the greater-than signs between cells. • Shikaku: cut the grid into rectangles, one per number, each of exactly that size. • Kakuro: fill the white cells so every run adds up to its clue, no digit repeating in a run. BUILT TO ACTUALLY PLAY • Four difficulties per puzzle, Easy through Expert, so there's a fair board whether you're learning the rules or hunting a real challenge. • Undo and redo, a mistake check, and a hint when you're stuck. • Auto-save: close the app mid-puzzle and pick up exactly where you left off. • Left-handed layout and haptics, your choice in Settings. • Light and dark mode, matching your system automatically. A DAILY CHALLENGE FOR EVERYONE • One puzzle a day, the same board for every player, rotating through all seven mechanics. • Build a streak and see your last seven days at a glance. FREE TO PLAY, HONESTLY • Play every puzzle and every difficulty for free, supported by ads between puzzles. • The first hint on any board is always free. • A one-time purchase removes ads completely and makes every hint free, no subscription. No account, no sign-in, and no internet connection needed to play. Whether you know these puzzles by name already or you've never tried a Japanese logic puzzle before, Pencil Logic is built to teach the rules on the board itself and keep a fresh one ready every time you open it.

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The developer, Muhammad Arqam, 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

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    The following data may be collected but it is not linked to your identity:

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Accessibility

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Information

Seller
  • Muhammad Arqam
Size
  • 24.4 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.
Languages
  • English
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 Xivora
  • Developer Website
  • Privacy Policy

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