# Not Evil Sudoku — Clean, Minimal and No Ads

> Minimalist, ad-free Sudoku app for iPhone and iPad with hints and stats. (iPhone/iPad app by Ashish Selvaraj.)

- Source: https://appshunter.io/ios/app/not-evil-sudoku/id1614071642 (this page in markdown: same URL + `.md`)
- Developer: [Ashish Selvaraj](https://appshunter.io/developer/1614070948)
- Category: Games, Entertainment, Casual, Puzzle
- Price: Free with in-app purchases
- Rating: 4.60/5 from 947 App Store ratings · 224 written reviews indexed
- Age rating: 4+
- Requires: iOS 15 · 21 MB
- Languages: American English, Dutch, Estonian, German (Germany), Chinese (Simplified, China), European Spanish, Thai, Turkish
- Released: 2022-04-14
- Data updated: 2026-08-25
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/not-evil-sudoku/id1614071642/reviews.md

## What is Not Evil Sudoku?

A joyful sudoku-solving experience built natively for iPhone and iPad and optimized for a zen solving experience free from bloat and distraction. Designed to be easy to play and meet you where ever you are in your sudoku journey: a casual solver or a sudoku pro. Stuck on a puzzle? Shake your phone for hints and turn on move by move validation in settings to get immediate feedback on your solve. Tickle your brain as you learn new solving strategies and customize the app to your taste with themes and alternate app icons.

Play a daily puzzle at a difficulty of your choice and see where you stack up with players across the globe. Or just turn off the stopwatch and relax.

Key features:
- Fully offline: no internet required
- No ads or distractions
- Real-time move validation to get immediate feedback
- Shake for a hint on the next logical move
- Leaderboards with assist tracking
- Easy, Medium, and Hard difficulty levels
- Light/Dark mode
- Stopwatch and best time tracking
- Notes: Keep track of candidates
- Auto-clear Notes: removes candidate numbers automatically in row, column, and box when they become outdated
- Speed demon: Lock numbers and place them in multiple tiles at once
- Arithmophobia: Sudoku with letters instead of numbers
- Daily streak tracking
- Daily reminder notifications
- Highlighter: tap a number to highlight all its instances on the board
- Themes to customize the interface (some require Pro)
- Alternate app icons (Pro)
- Charts and statistics (Pro): track solve speed over time and puzzle count by difficulty

Play the daily puzzle at your preferred difficulty for free without any limits on assists or game features. Upgrade to Pro with a one-time purchase to unlock unlimited games, detailed stats, more themes, and alternate app icons. Pro supports Family Sharing.

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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


## What do users think of Not Evil Sudoku?

Overall sentiment: positive

**Pros**

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

**Cons**

- 🐛 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

**Commonly reported bugs**

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

**Most 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
- Remove a number as a choice when it has been placed successfully

## Recent user reviews (10 of 224)

All indexed reviews: https://appshunter.io/ios/app/not-evil-sudoku/id1614071642/reviews.md

### 5/5 — Amazing

*2026-07-25, version 3.7.5*

No ads, simple, and just very fun

### 5/5 — Best Sudoku App

*2026-07-22, version 3.7.5*

You can feel the person that made this actually cares about the game. Not spamming ads everywhere just play unlimited sudoku forever, easiest sudoku app i’ve used by far

### 5/5 — Amazing.

*2026-07-15, version 3.7.3*

Amazing game. Very good. Im proud of you. Continue being amazing. Make harder levels. I love this. Amazing. Fantastic.

### 5/5 — Thank you

*2026-07-15, version 3.7.3*

One of the few apps made simply for user enjoyment.  Thank you for not selling us to the advertisers.  That really is the best part of your wonderful game.  Love the "old school" setting.  Wish the rankings could be filtered by old school 🤔

### 5/5 — Fun and No Ads

*2026-06-24, version 3.7.2*

Truly not evil. Not selling my soul to a corporate who doesn’t care if I play the game. This Sudoku is a hero

### 5/5 — Great

*2026-06-21, version 3.7.2*

Good ui, no ads, its great.

### 5/5 — peaceful in here

*2026-06-19, version 3.7.2*

only problem is that speed demon is a little buggy sometimes but i can resolve it easily by closing and reopening the app. i dont even mind that little bit of friction. it makes the app endearing to me

### 5/5 — Sooo Goood

*2026-06-16, version 3.7.2*

With out any ad

### 5/5 — Great sudoku app!

*2026-06-16, version 3.7.2*

No ads, all features you need for free and bonus ones (charts, custom icons) with an affordable one off (not subscription!!) purchase. Plus the speed demon setting is my favourite and now I can’t go back to other methods of filling in.

### 5/5 — Would Recommend

*2026-06-13, version 3.7.2*

It’s insane how hard it is to find a not evil app in this age, so good on the devs for making one!

## Frequently asked questions about Not Evil Sudoku

### What is Not Evil Sudoku?

Not Evil Sudoku is a mobile application designed to provide a clean, minimal, and distraction-free Sudoku-solving experience. It is built natively for iPhone and iPad and offers features to assist both casual and professional players.

### What are the key features of Not Evil Sudoku?

Key features include fully offline play, no ads, real-time move validation, shake-to-hint functionality, leaderboards, customizable themes, and the ability to take notes. It also offers daily puzzles with adjustable difficulty and tracking for streaks and best times.

### How much does Not Evil Sudoku cost?

The app offers a free version with daily puzzles and core features. An optional one-time purchase unlocks the Pro version, which provides unlimited games, detailed statistics, additional themes, and alternate app icons. Pro features support Family Sharing.

### What devices is Not Evil Sudoku compatible with?

The app is built natively for iPhone and iPad, ensuring an optimized experience on Apple mobile devices. It can be played fully offline, meaning no internet connection is required to enjoy the puzzles.

### What are some common use cases for Not Evil Sudoku?

Users can play daily puzzles to challenge themselves, practice new solving strategies, or simply relax with a logic game. The app is ideal for quick brain breaks, long commutes, or whenever a Sudoku fix is desired, with or without an internet connection.

## Version history (last 5 releases)

### 3.7.5 — 2026-07-21

Bug fixes for notes changing on app restart, hint engine and GIF replays!

### 3.7.4 — 2026-07-16

Bug fixes for notes changing on app restart, hint engine and GIF replays!

### 3.7.3 — 2026-07-02

Auto-clear notes can now clear up your notes even if move by move validation is off. This update also brings a big update to the hint engine which can now solve much more complex puzzles and give better hints. Enjoy!

### 3.7.2 — 2026-05-27

GIF replays of your solves, unlimited games for everyone, copy your stats as images and more!

### 3.7.1 — 2026-05-26

GIF replays of your solves, unlimited games for everyone, copy your stats as images and more!

## Apps similar to Not Evil Sudoku

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Sudoku.com - Number Games](https://appshunter.io/ios/app/sudokucom-number-games/id1193508329) | 4.8 (1,847,599) | Free | Games |
| [Sudoku Color - Classic Puzzle!](https://appshunter.io/ios/app/sudoku-color-classic-puzzle/id1503221765) | 4.8 (34,525) | Free | Games |
| [Sudoku· Classic Puzzle Games](https://appshunter.io/ios/app/sudoku-classic-puzzle-games/id1409781798) | 4.7 (63,544) | Free | Games |
| [Sudoku ▦](https://appshunter.io/ios/app/sudoku/id1407780576) | 4.7 (104,097) | Free | Games |
| [Sudoku Master Edition](https://appshunter.io/ios/app/sudoku-master-edition/id1260190370) | 4.6 (7,889) | Free | Games |
| [Sudoku Mega Bundle](https://appshunter.io/ios/app/sudoku-mega-bundle/id970674839) | 4.8 (2,874) | Free | Games |

## Related topics

[not evil sudoku](https://appshunter.io/ios/topics/not-evil-sudoku) · [sudoku dark mode](https://appshunter.io/ios/topics/sudoku-dark-mode) · [minimal games](https://appshunter.io/ios/topics/minimal-games) · [spiidoku sudoku 6x6](https://appshunter.io/ios/topics/spiidoku-sudoku-6x6)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*