# Slitherlink vs Kuromasu puzzle

The clearest difference is in-app purchases: Kuromasu puzzle at none against Slitherlink's 13. Kuromasu puzzle also leads on iOS requirement (12.0 vs 15.6). Slitherlink's advantage is ads (none vs shown) and update cadence (every 4 months vs every 33 months). On price, rating and device support there is nothing between them.

Both are free to download. Slitherlink sells 13 one-off in-app purchases. Kuromasu puzzle asks for nothing beyond the download.

Kuromasu puzzle holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Slitherlink has 461 ratings behind it against 1, so its average is the more settled of the two.

Slitherlink ships an update every 4 months, Kuromasu puzzle every 33 months. The most recent releases landed on October 26, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Slitherlink | Kuromasu puzzle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (461 ratings)](https://appshunter.io/ios/app/slitherlink-loop-the-snake/id605918324/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kuromasu-puzzle/id1076156009/reviews)** |
| Number of ratings | **461** | 1 |
| Positive reviews | 89.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 4 months** | Every 33 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 7 MB | 26 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Conceptis Ltd.](https://appshunter.io/developer/479420055) | [Yuki Fujimoto](https://appshunter.io/developer/467085185) |

## What reviewers say

### Slitherlink

[App page](https://appshunter.io/ios/app/slitherlink-loop-the-snake/id605918324)

Solve logic puzzles by drawing a single loop around clues on a grid. Connect dots to form a continuous line, with no crossings or branches. Offers endless fun and intellectual challenge for puzzle enthusiasts.

**Highlights:** Draw a single continuous loop, Surround numbered clues, Pure logic, no math required, Weekly bonus puzzles, Multiple difficulty levels, Auto complete clues, Highlight link segment

**Features:** Family Sharing, Vision Pro support

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Medium Snacks 1 | $0.99 | one-time |
| Easy Variety 1 | $1.99 | one-time |
| Easy Variety - Large 1 | $1.99 | one-time |
| Medium Variety 1 | $1.99 | one-time |
| Medium Variety - Large 1 | $1.99 | one-time |
| Hard Variety 1 | $1.99 | one-time |
| Easy Variety 2 | $1.99 | one-time |
| Medium Variety 2 | $1.99 | one-time |
| Hard Variety 2 | $1.99 | one-time |
| Big & Easy 1 | $1.99 | one-time |
| Big & Medium 1 | $1.99 | one-time |
| Hard Variety - Large 1 | $1.99 | one-time |
| Big & Tough 1 | $1.99 | one-time |

**What reviewers like**

- 🎉 Challenging and fun puzzles
- 👍 Well-designed and intuitive interface
- 🔍 Helpful check and undo features
- 💡 Variety of puzzle sizes and difficulty levels
- 🧠 Requires logical thinking

**What reviewers complain about**

- 🔍 Lack of coloring/marking tools to differentiate loop segments
- 💰 Expensive puzzle pack prices
- 🌙 No dark mode option
- 🐛 Occasional bugs and crashes
- 🔍 Limited free puzzle content

**Reported bugs**

- App not loading properly for some users
- Freezing issues on login screen
- Incompatibility with older devices

**Requested features**

- Add a dark mode option
- Implement coloring/marking tools for loop segments
- Provide more free puzzle content
- Reduce pricing for puzzle packs
- Add a rewind/undo feature to go back to previous puzzle states


### Kuromasu puzzle

[App page](https://appshunter.io/ios/app/kuromasu-puzzle/id1076156009)

This logic puzzle game challenges players to deduce the color of each cell on a grid. Numbers indicate visible white cells, while adhering to rules about black cell placement and white cell connectivity.

**Highlights:** Grid-based logic puzzles, Deduce cell colors, Numbered clues, Adjacency rules, White cell connectivity

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Slitherlink free?

Slitherlink is free to download, with in-app purchases available.

### Is Kuromasu puzzle free?

Kuromasu puzzle is free to download, with no in-app purchases.

### Which has better reviews, Slitherlink or Kuromasu puzzle?

Kuromasu puzzle is rated higher. Slitherlink averages 4.8 out of 5 from 461 ratings, while Kuromasu puzzle averages 5.0 from 1 ratings.

### Do Slitherlink or Kuromasu puzzle have ads?

Kuromasu puzzle shows ads; Slitherlink does not.

### Which is updated more often, Slitherlink or Kuromasu puzzle?

Slitherlink ships an update every 4 months, and Kuromasu puzzle every 33 months. Most recently, Slitherlink was updated on October 26, 2026 and Kuromasu puzzle on September 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*