DUO - Logic Grid & Brain Game

Minimalist Binary Brain Game

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

Master the grid. A minimalist binary brain game for logic puzzle fans. If you love Sudoku, Binary puzzles, or Takuzu, get ready for a fresh mental workout. DUO takes the classic logic grid concept and refines it into a sleek, modern experience designed to test your deductive reasoning and spatial intelligence. HOW IT WORKS Every move is a balance. Your goal is to fill the grid with symbols (Hearts, Spades, Diamonds, Clubs) while obeying three strict rules. No math is required: just pure logic. GAME FEATURES Infinite Logic Challenges From quick 4x4 warm-ups to massive 12x12 Expert grids, there is a level for every mood. Whether you have 2 minutes or 2 hours, DUO keeps your brain sharp. Classic & Quad Modes Classic: Play with 2 symbols for a Zen binary experience. Quad Mode: Step up the difficulty with 4 symbols for an expert-level challenge. Deep Statistics & Streaks Track your brain training journey with detailed stats. Monitor your Win Rate, visualize your Daily Streak on the calendar, and race against your own "Best Time" across all difficulty levels. Smart Solving Tools Don't just guess, deduce! Use Notes to visualize possibilities before you commit. Stuck on a hard pattern? Use smart Hints to break through or Error Highlighting to catch mistakes instantly. Customize Your Experience Make the game yours with unlockable themes and board styles. Themes: Switch between Sunset, Forest, and our beautiful Dark Mode. Styles: Choose from Minimal, Neon, or Dot-style grids. Controls: Toggle "Select & Place" for speed or classic tapping for precision. Why play DUO? It’s more than just a game; it’s a gym for your brain. Perfect for fans of grid puzzles, crosswords, and Sudoku who want a clean, minimalist experience without the clutter. Download DUO today. Do you have the logic to balance the grid? EULA Please visit https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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The developer, Pallet Technologies, 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
    • Usage Data

  • Data Linked to You

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

    • Purchases

  • Data Not Linked to You

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

    • Identifiers
    • Usage Data
    • 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
  • Pallet Technologies LTD
Size
  • 66.4 MB
Category
  • Puzzle
Compatibility
Requires iOS 16.0 or later.
  • iPhone
    Requires iOS 16.0 or later.
  • iPad
    Requires iPadOS 16.0 or later.
  • Mac
    Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English
Age Rating
16+
In-App Purchases
Yes
  • Glass Board $0.99
  • Sunset Theme $0.99
  • Paper Board $0.99
  • Thick Board $0.99
  • Slate Board $0.99
  • Nature Symbols $0.99
  • Geometric Symbols $0.99
  • Neon Symbols $0.99
  • Dots Board $0.99
  • Emoji Symbols $0.99
  • Learn More
Copyright
  • © 2026 Pallet Technologies LTD
  • Developer Website
  • Privacy Policy

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