Linked Words vs Index Sums
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Linked Words
Connect letters to form words inspired by an image in this word-searching game. With over 150 unique levels and new ones added weekly, it's designed to boost concentration and word association skills for all ages.
- Word-searching gameplay
- Image-based word association
- Over 150 unique levels
- New levels added weekly
- In-game coin rewards
- Clue system for hints
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Take the challenge to solve all the Linked Words levels! Linked Words is a word-searching game that consists in connecting groups of letters to form words from an image. Find all the words related to the image displayed to complete a level. You can connect the groups of letters only from left to right and vice versa. Linked Words game is challenging for kids & captivating for adults! All the levels are unique with beautiful pictures and thousands of different words. With more than 150 levels, this game improves your concentration and your brain's capacity to associate words from an image. We create new levels each week to let you have infinite enjoyment. Earn coins for each level completion and use them to reveal clues when you are stuck during the game. So, will you find all the words?
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
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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
The clearest difference is rating: Index Sums at 5.0 against Linked Words's 4.3. Index Sums also leads on in-app purchases (none vs 4) and ads (none vs shown). Linked Words's advantage is update cadence (weekly vs every 3 weeks) and iOS requirement (11.0 vs 17.6). On price, ratings volume and device support 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. Linked Words sells 4 one-off in-app purchases. Index Sums asks for nothing beyond the download.
Index Sums holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 3 and 3 respectively.
Linked Words ships an update weekly, Index Sums every 3 weeks. The most recent releases landed on June 1, 2026 and June 24, 2026 respectively.
| Parameter | Linked Words | Index Sums |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (3 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 3 | 3 |
| Update frequency | Weekly — better | Every 3 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 123 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Tommy Buonomo | ZORIX LLC |
Customer experience
Linked Words
Index Sums
In-app purchases
Linked Words
- 500 coins$1.99
- No Ads$2.99
- 2000 coins$3.99
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- 10000 coins$16.99
Index Sums
No in-app purchases









