Ripple Effect vs Index Sums
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Ripple Effect
A logic puzzle game where players fill grids with consecutive integers based on room size. It features rules about number placement to ensure separation between identical digits in rows and columns.
- Consecutive integer placement
- Room-based puzzle mechanics
- Row and column separation rules
- Challenging logic puzzles
- Grid-based gameplay
Read full descriptionHide full description
Ripple Effect is popular logic puzzle game in Japan. The solver must place one positive integer into each cell of the grid according to these rules: Every room must contain the consecutive integers from 1 to the quantity of cells in that room inclusive. If two identical numbers appear in the same row or column, at least that many cells with other numbers must separate them. For example, two cells both containing '1' may not be orthogonally adjacent, but must have at least one cell between them with a different number. Two cells marked '3' in the same row or column must have at least three cells with other numbers between them in that row or column, and so on.
Index Sums
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
Read full descriptionHide full description
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!
Screenshots
Verdict
Ripple Effect and Index Sums both sit at 5.0 stars, but that hides the real split: 100% of Index Sums's written reviews are positive against 30% of Ripple Effect's. Index Sums also leads on update cadence (every 3 weeks vs every 24 months). Ripple Effect's advantage is iOS requirement (8.0 vs 17.6). On price, rating, ratings volume and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Ripple Effect against 5.0 for Index Sums. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews are what separate them: 30% of Ripple Effect's written reviews are positive against 100% of Index Sums's.
Ripple Effect ships an update every 24 months, Index Sums every 3 weeks. The most recent releases landed on June 1, 2026 and June 24, 2026 respectively.
| Parameter | Ripple Effect | Index Sums |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) | 5.0 (3 ratings) |
| Positive reviews | 30.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 | 3 |
| Update frequency | Every 24 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 8.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 16 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Yuki Fujimoto | ZORIX LLC |
Customer experience
Ripple Effect
Index Sums
In-app purchases
Ripple Effect
No in-app purchases
Index Sums
No in-app purchases
Questions
Is Ripple Effect free?
Is Index Sums free?
Which has better reviews, Ripple Effect or Index Sums?
Do Ripple Effect or Index Sums have ads?
Which is updated more often, Ripple Effect or Index Sums?
Other comparisons















