# Not Evil Sudoku vs PixelTherapy

The clearest difference is ads: Not Evil Sudoku at none against PixelTherapy's shown. Not Evil Sudoku also leads on ratings volume (1.1K vs 3). PixelTherapy's advantage is rating (5.0 vs 4.6) and review sentiment (100% vs 75%). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Not Evil Sudoku sells 1 one-off in-app purchase and PixelTherapy sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

PixelTherapy holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Not Evil Sudoku has 1.1K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 75% of Not Evil Sudoku's written reviews are positive against 100% of PixelTherapy's.

Not Evil Sudoku ships an update every 9 days, PixelTherapy every 4 days. The most recent releases landed on October 27, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Not Evil Sudoku | PixelTherapy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (1.1K ratings)](https://appshunter.io/ios/app/not-evil-sudoku/id1614071642/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/pixeltherapy/id6741873013/reviews)** |
| Number of ratings | **1.1K** | 3 |
| Positive reviews | 74.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 days | **Every 4 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 23 MB | 125 MB |
| Requires iOS | **15** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Ashish Selvaraj](https://appshunter.io/developer/1614070948) | [Eugenio Keller Puente](https://appshunter.io/developer/1566330284) |

## What reviewers say

### Not Evil Sudoku

[App page](https://appshunter.io/ios/app/not-evil-sudoku/id1614071642)

Enjoy a distraction-free Sudoku experience with helpful features like hints and real-time validation. Track your progress, compete globally, and customize the app with themes. Play daily puzzles for free or upgrade for unlimited games and advanced statistics.

**Highlights:** Fully offline play, No ads or distractions, Real-time move validation, Shake for hints, Daily puzzles with leaderboards, Customizable themes and icons, Notes and auto-clear notes

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $4.99 | one-time |

**What reviewers like**

- 🚀 Clean, minimalistic design
- 🔒 No ads or tracking
- 👍 Customizable features
- 👍 Good puzzle difficulty
- 👍 Helpful community

**What reviewers complain about**

- 🐛 Disappearing numbers glitch
- 🐛 App icon doesn't change for dark mode
- ⏱️ Limit of one game per day on free version
- 💰 Paid version considered expensive by some

**Reported bugs**

- Disappearing numbers when closing the app
- Numbers swapping to incorrect spots

**Requested features**

- Add auto-clear notes option without move validation
- Provide more theme color options
- Implement a 'warm' mode similar to other sudoku apps
- Add ability to remove notes after number is placed
- Highlight all instances of a number in the puzzle


### PixelTherapy

[App page](https://appshunter.io/ios/app/pixeltherapy/id6741873013)

Engage in a relaxing color-by-number puzzle designed to reduce stress. Enjoy a peaceful experience with ambient music and no timers. Discover new themed collections and unlock bonus content through daily play and optional ads.

**Highlights:** Stress-free pixel coloring, Soothing ambient music, Themed art collections, Auto-fill power-ups, Daily streaks and rewards, Weekly content updates

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pixel Therapy Premium | $2.99 | one-time |


## Frequently asked questions

### Is Not Evil Sudoku free?

Not Evil Sudoku is free to download, with in-app purchases available.

### Is PixelTherapy free?

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

### Which has better reviews, Not Evil Sudoku or PixelTherapy?

PixelTherapy is rated higher. Not Evil Sudoku averages 4.6 out of 5 from 1.1K ratings, while PixelTherapy averages 5.0 from 3 ratings.

### Do Not Evil Sudoku or PixelTherapy have ads?

PixelTherapy shows ads; Not Evil Sudoku does not.

### Which is updated more often, Not Evil Sudoku or PixelTherapy?

Not Evil Sudoku ships an update every 9 days, and PixelTherapy every 4 days. Most recently, Not Evil Sudoku was updated on October 27, 2026 and PixelTherapy on October 20, 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.*