Index Sums

Japanese Number Logic Puzzles

Free

Challenge your mind with Index Sums (Kakurasu), an elegant Japanese number logic puzzle that combines the best of Sudoku and Nonograms! HOW TO PLAY: • Fill in the grid based on row and column sums • Use logic to determine which cells should be filled • Complete the puzzle to reveal a hidden pattern • No guessing required - pure logic and deduction! KEY FEATURES: • Multiple difficulty levels (Easy, Medium, Hard) • Daily challenges to keep your mind sharp • Track your progress and statistics • Beautiful, minimalist design • Dark mode support • Offline play capability • Customizable themes and colors • Haptic feedback for better interaction BENEFITS: • Mental Agility: Challenge your logical thinking and problem-solving skills • Focus & Concentration: Practice maintaining focus through engaging puzzles • Pattern Recognition: Develop your ability to spot patterns and make quick decisions • Stress Relief: A relaxing way to unwind while keeping your mind active • Daily Challenge: Build a fun routine with daily puzzles • Progress Tracking: Monitor your improvement over time GAME MODES: • Classic Mode: Solve at your own pace • Daily Puzzles: New challenges every day • Practice Mode: Learn the basics FEATURES: • Intuitive touch controls • Haptic feedback • Progress tracking and statistics • Level progression system • Share your achievements • No ads or interruptions • Regular updates with new features Whether you're a puzzle enthusiast or looking to improve your logical thinking, Index Sums offers the perfect blend of challenge and satisfaction. Download now and join thousands of players in this addictive number logic puzzle!

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New interface

Version 2.0.0

The developer, ZORIX 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 .

  • Data Linked to You

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

    • Contact Info

  • Data Not Linked to You

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

    • Identifiers
    • Usage Data
    • Diagnostics
    • Other Data

Privacy practices may vary based, for example, 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

  • Provider
    • ZORIX LLC
  • Size
    • 25.8 MB
  • Category
    • Puzzle
  • Compatibility
    Requires iOS 17.6 or later.
    • iPhone
      Requires iOS 17.6 or later.
    • iPad
      Requires iPadOS 17.6 or later.
    • Apple Vision
      Requires visionOS 1.3 or later.
  • Languages
    • English
  • Age Rating
    4+
  • Copyright
    • © 2025 ZORIX LLC
  • Privacy Policy

    • More by ZORIX LLC

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