# Just Button vs Not Evil Sudoku

The clearest difference is in-app purchases: Just Button at none against Not Evil Sudoku's 1. Just Button also leads on review sentiment (83% vs 74%) and iOS requirement (13.0 vs 15). Not Evil Sudoku's advantage is rating (4.6 vs 4.3) and update cadence (every 9 days vs every 3 weeks). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Not Evil Sudoku sells 1 one-off in-app purchase. Just Button asks for nothing beyond the download.

Not Evil Sudoku holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 944 and 983 respectively. Written reviews complicate that: 83% of Just Button's written reviews are positive against 74% of Not Evil Sudoku's, so the app with the better star average is not the one people write more warmly about.

Just Button ships an update every 3 weeks, Not Evil Sudoku every 9 days. The most recent releases landed on September 20, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Just Button | Not Evil Sudoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (944 ratings)](https://appshunter.io/ios/app/just-button/id1580675293/reviews) | **[4.6 (983 ratings)](https://appshunter.io/ios/app/not-evil-sudoku/id1614071642/reviews)** |
| Number of ratings | 944 | **983** |
| Positive reviews | **83.3% of reviews** | 73.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | **Free** | Freemium |
| Size | 1 MB | 23 MB |
| Requires iOS | **13.0** | 15 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [aleros.io LLC](https://appshunter.io/developer/1552999210) | [Ashish Selvaraj](https://appshunter.io/developer/1614070948) |

## What reviewers say

### Just Button

[App page](https://appshunter.io/ios/app/just-button/id1580675293)

This is a minimalist application that provides a single interactive button. Each tap increments a counter displayed on the screen. It offers a distraction-free experience with no advertisements or in-app purchases.

**Highlights:** Single interactive button, Number counter, No ads, No in-app purchases, No data mining

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Addictive and engaging gameplay
- 👍 Unique and minimalistic design
- 🔒 No ads or in-app purchases
- 💡 Surprising depth and story
- 🚀 Smooth and responsive controls

**What reviewers complain about**

- 🐛 Occasional bugs and glitches
- 🔊 Loud sound effects that can't be muted
- 🤔 Frustrating mini-games and difficulty spikes
- 🕰️ Repetitive and grindy progression

**Reported bugs**

- Progress reset after purchasing certain upgrades
- Inability to exit certain mini-games without restarting
- Inconsistent button responsiveness

**Requested features**

- Option to disable sound effects
- Ability to save progress and resume later
- More variety in gameplay and mini-games


### 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


## Frequently asked questions

### Is Just Button free?

Just Button is free to download, with no in-app purchases.

### Is Not Evil Sudoku free?

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

### Which has better reviews, Just Button or Not Evil Sudoku?

Not Evil Sudoku is rated higher. Just Button averages 4.3 out of 5 from 944 ratings, while Not Evil Sudoku averages 4.6 from 983 ratings.

### Do Just Button or Not Evil Sudoku have ads?

Neither Just Button nor Not Evil Sudoku shows ads.

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

Just Button ships an update every 3 weeks, and Not Evil Sudoku every 9 days. Most recently, Just Button was updated on September 20, 2026 and Not Evil Sudoku on September 24, 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.*