SOLN: Circuit Notebook

Hand-Drawn Circuit Puzzles

Only for iPhone

Free · In‑App Purchases

iPhone

Tap a wire. Close a circuit. Bring a little invention to life. Start with 10 free puzzles, then open the full notebook with one permanent purchase. A little ink. A few wires. The pleasure of making something work. SOLN is a hand-drawn circuit puzzle game tucked inside an inventor's notebook. Tap to rotate wire tiles, join the circuit, and bring curious little mechanisms to life. Start with a lamp, then discover switches, one-way flow, pumps, and increasingly playful contraptions. TRY THE FIRST 10 PUZZLES FREE Play the first ten authored notebook pages without an account. One optional, permanent in-app purchase opens the rest of the notebook and its extra modes as you progress. No subscription. No ads. No paid cogs. A NOTEBOOK THAT GROWS WITH YOU Work through chapters of new ideas, one page at a time. Fixed pieces are marked with ink pins; movable wires turn with a tap. Learn each mechanism by making it work, then follow the circuit through larger inventions. MORE TO DISCOVER WITH THE FULL NOTEBOOK - Daily: a fresh page for the day. - Endless: more generated puzzles using the mechanisms you reach. - Machines: connect multiple pages into a larger working contraption. - Workshop: earn inks, covers, desk pieces, and soundscapes through play. - Drafting Table: after completing the notebook, choose puzzle ingredients and generate fresh boards. The purchase grants access; progress and collectibles remain earned. It does not complete chapters or buy rewards for you. YOUR OWN SMALL WORKSHOP Graph paper, hand-inked lines, and soft yellow power give each circuit a place in your notebook. Solve a page, see its mechanism work, and make the workshop your own. Made for iPhone in portrait, in English. Core puzzle play works offline. Internet access is needed for App Store purchases and restoration. Progress stays on your device: there is no SOLN account or cloud save. Restore Purchase restores eligible full-notebook access, not puzzle progress.

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The developer, Minzy Studios LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

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    Information

    Seller
    • Minzy Studios LLC
    Size
    • 57.5 MB
    Category
    • Puzzle
    Compatibility
    Requires iOS 16.4 or later.
    • iPhone
      Requires iOS 16.4 or later.
    Languages
    • English
    Age Rating
    9+
    • 9+
    • Learn More
    • Infrequent
      Cartoon or Fantasy Violence
      Guns or Other Weapons
    In-App Purchases
    Yes
    Copyright
    • © 2026 Minzy Studios LLC
  • Developer Website
  • Privacy Policy

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