Nodelock: Logic Pipes

One solution. Never a guess.

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

Rotate tiles until the whole grid lights up. Every board is proven to have exactly one solution, reachable by logic alone. One solution. Always. Never a guess. Nodelock is a daily tile-rotation puzzle. Tap a tile to turn it 90°, mate every wire stub with its neighbour, and light the whole grid from a single amber source. That is the entire control surface: one verb, no menus, no failure state, no timer. WHAT MAKES IT DIFFERENT Every board is solvable by pure local deduction and has exactly one solution — not as a claim in a description, but as an acceptance gate. A board only ships if a search-free solver settles every tile with zero guesswork AND an independent search confirms no second solution exists. Boards that would make you guess are thrown away before you ever see them. WHY YOU'LL STAY • A free daily board, identical for every player worldwide • Two streaks: one for showing up, one for solving without a hint • Endless mode with an explicit difficulty picker, not an invisible ramp • A free archive — replay any past date, reconstructed from its seed • Hints reveal the next real deduction, never the answer MADE TO BE COMFORTABLE • A VoiceOver-solvable board and a colorblind-safe palette • Never colour as the only signal • Play in English, German, Arabic, Persian or Kurdish (Sorani) • Proper right-to-left layout and localized numerals • Fully offline. No account, no sign-up, nothing to wait for FREE, HONESTLY The daily, the archive, streaks and stats are free, with light optional ads. Rewarded video is opt-in and only ever buys a hint. There are no banner ads on the board. One small purchase removes ads for good — no subscription, no energy, no timers.

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The developer, Zakaria Fatahi, 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:

    • Location
    • Identifiers
    • Usage Data

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Location
    • Identifiers
    • Usage Data

  • Data Not Linked to You

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

    • Diagnostics

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
Zakaria Fatahi
Size
26.5 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 Zakaria Fatahi
  • Developer Website
  • Privacy Policy

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