# Nonograms Katana vs Rulo

The clearest difference is ratings volume: Nonograms Katana at 6.8K against Rulo's 7. Rulo's advantage is iOS requirement (11.0 vs 14.0). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Nonograms Katana sells 3 one-off in-app purchases and Rulo sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for Nonograms Katana against 4.9 for Rulo. That said, the two scores are not equally well evidenced: Nonograms Katana has 6.8K ratings behind it against 7, so its average is the more settled of the two.

## The numbers

| Metric | Nonograms Katana | Rulo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (6.8K ratings)](https://appshunter.io/ios/app/nonograms-katana/id1037710023/reviews) | **[4.9 (7 ratings)](https://appshunter.io/ios/app/rulo/id1435291458/reviews)** |
| Number of ratings | **6.8K** | 7 |
| Positive reviews | 82.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 27 MB | 67 MB |
| Requires iOS | 14.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Ucdevs Interaction DOO](https://appshunter.io/developer/1037710022) | [TA MINH QUANG](https://appshunter.io/developer/965095099) |

## What reviewers say

### Nonograms Katana

[App page](https://appshunter.io/ios/app/nonograms-katana/id1037710023)

Engage in logic puzzles where you fill cells based on numerical clues to reveal hidden pictures. This app offers a vast collection of puzzles, tools for marking cells, and options to create and share your own challenges.

**Highlights:** 1001 nonogram puzzles, Create and share custom puzzles, Black-and-white and colored puzzles, Puzzles sorted by size, Hints and undo/redo functionality, Cloud save and achievements

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 80 Hints | $0.99 | one-time |
| 200 Hints | $1.99 | one-time |
| VIP version | $2.99 | one-time |

**What reviewers like**

- 👍 Lots of puzzles
- 👍 Customizable settings
- 👍 Minimal ads
- 👍 Challenging puzzles
- 👍 User-created puzzles

**What reviewers complain about**

- 🐛 Occasional crashes
- 🐛 Puzzle progress loss
- 🐛 Ads not working
- 🐛 Freezing issues
- 🐛 Compatibility problems

**Reported bugs**

- Puzzle progress not saving
- Puzzle images not loading
- Freezing/crashing on larger puzzles
- Ads not playing properly
- Compatibility issues with newer iOS versions

**Requested features**

- Dark mode option
- Ability to rearrange/move puzzle pieces
- Difficulty ratings for puzzles
- Automatic line/row completion
- Ability to follow/subscribe to users


### Rulo

[App page](https://appshunter.io/ios/app/rulo/id1435291458)

A math puzzle game designed to enhance your thinking skills by analyzing number relationships in grids. Solve puzzles by hiding numbers to match row and column sums, aiming to become a Master.

**Highlights:** Number grid puzzles, Analyze number relationships, Improve thinking ability, Master level challenges, Row and column sum matching

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5 Hints | $1.99 | one-time |


## Frequently asked questions

### Is Nonograms Katana free?

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

### Is Rulo free?

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

### Which has better reviews, Nonograms Katana or Rulo?

Rulo is rated higher. Nonograms Katana averages 4.8 out of 5 from 6.8K ratings, while Rulo averages 4.9 from 7 ratings.

### Do Nonograms Katana or Rulo have ads?

Neither Nonograms Katana nor Rulo shows ads.

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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.*