Nice game and great design
Nice game and great design
Free
About
Engage your mind with a Japanese number logic puzzle. Fill grids based on row and column sums, using pure logic to reveal hidden patterns. Offers multiple difficulty levels and daily challenges for continuous mental stimulation.
✓Row and column sum logic puzzles
✓Multiple difficulty levels
✓Daily challenges
✓Progress tracking and statistics
✓Offline play
✓Customizable themes
✓Haptic feedback
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What's New in Index Sums
2.0.0
September 28, 2025
New interface
User reviews
Developer apps
FAQ
How do you play Index Sums?
Index Sums involves filling a grid based on the sums of its rows and columns. You use logic and deduction to determine which cells to fill, revealing a hidden pattern without any guessing.
What are the game modes in Index Sums?
Index Sums offers Classic Mode for solving at your own pace, Daily Puzzles for new challenges each day, and Practice Mode to learn the basics of the game.
Does Index Sums have ads?
No, Index Sums is completely ad-free, ensuring an uninterrupted and immersive puzzle-solving experience for all players.
Can I play Index Sums offline?
Yes, Index Sums supports offline play, allowing you to enjoy the puzzles and train your mind anytime, anywhere, without needing an internet connection.
What devices are supported by Index Sums?
Index Sums is available on iPhone and iPad devices, offering a seamless experience across Apple's mobile platforms.
How often is Index Sums updated?
The app was last updated on September 28, 2025, with version 2.0.0, and the developer indicates regular updates with new features.
What is the age rating for Index Sums?
Index Sums has an age rating of 4+, making it suitable for a wide range of players interested in logic puzzles.
What makes Index Sums unique compared to other logic puzzles?
Index Sums combines elements of Sudoku and Nonograms with its unique row and column sum mechanic, offering a fresh challenge that relies purely on logic and deduction.
