GreyOut: Lights Off

Puzzle

Only for iPhone

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

iPhone

Grey Out is a minimalist logic puzzle that will test your mind in the most satisfying way possible. HOW TO PLAY Each level presents a 5×5 grid of glowing cells. Tap any cell and it — along with its four neighbors — flips state. Your goal: turn every cell grey. Simple rules. Endless depth. 24 HANDCRAFTED LEVELS Progress through four chapters of increasing challenge: • Beginner — Learn the core mechanic with elegant one- and two-move solutions • Intermediate — Four- and five-tap puzzles that introduce spatial thinking • Advanced — Up to nine simultaneous effects demanding careful planning • Expert — Twelve-tap masterpieces where one wrong move unravels everything DAILY CHALLENGE A brand-new puzzle every day, seeded by the date so everyone plays the same one. Build your streak and see how far you can go. BUILT-IN HINT SYSTEM Stuck? The hint system uses an exact mathematical solver — Gaussian elimination over GF(2) — to find the next optimal move. No guessing, no randomness: provably correct guidance every time. EARN UP TO 3 STARS PER LEVEL - 3 stars: Solve at or below par - 2 stars: Within 60% above par - 1 star: Any solution POLISH THROUGHOUT • Procedurally synthesized sound — no audio files, every tap sound is computed live • Haptic feedback tuned to match the rhythm of each action • Animated wave effect ripples across affected cells on every tap • Confetti celebration when you crack a tough puzzle • Full VoiceOver support NO ACCOUNTS. NO ADS. NO TRACKING. Grey Out stores your progress locally on your device. Nothing is collected, nothing is shared.

Ratings & Reviews

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• Unlock Expert Levels in-app purchase added • Bug fixes and stability improvements

Version 1.0.2

The developer, Haktan Kocyigit, 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 Not Collected

    The developer does not collect any data from this app.

    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
    • Haktan Kocyigit
    Size
    • 1.4 MB
    Category
    • Puzzle
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English and Turkish
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2026 Haktan Kocyigit
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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