Not Evil Sudoku

Name: Not Evil Sudoku
Rating: 4.7 (143 reviews)
Author: Ashish Selvaraj

Clean, Minimal and No Ads

Free · In-App Purchases

143 Ratings
Age Rating

4+
Years
Category

Casual
Developer

Ashish Selvaraj
Language

EN
+ 7 More
Size

21.6
MB

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of candidates - Auto-clear Notes: removes candidate numbers automatically in row, column, and box when they become outdated - Speed demon: Lock numbers and place them in multiple tiles at once - Arithmophobia: Sudoku with letters instead of numbers - Daily streak tracking - Daily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.

Ratings & Reviews

4.7

out of 5

143 Ratings

Lovely, lovely app
13/09/2025
Spid3rmanluke
I mean, it’s exactly what it says it is, it’s sudoku, simple as that. Worth paying for it, I’d say, I like the UI and such, and especially the amount of options it has to customise how you play definitely puts it much above most other apps like this. I would ask that maybe you could allow auto-clearing notes to be turned on without move by move validation, but that alone is my only absolutely minuscule gripe.I might also ask for perhaps more theme colours and such. Thinking on that last point, I feel the waffle design seen in one of the app icons could actually be quite fun to use as a theme option, if that could be implemented well.It may go against the simplistic design this app seems to lean more towards, but, I think it being an optional thing mostly negates that, as you’d have to go out of your way to choose it. Of course, this is just a suggestion, you’ve no obligation to act on it if you don’t want to, I’m simply sharing my thoughts as a passive user, lol, it’ll be a great app regardless :)

Developer Response
Thank you for the thoughtful review. More themes could be good, I have experimented with wallpapers behind the sudoku board. And your point on auto-clear being allowed when move by move validation is off has been noted. Thanks for playing!
Lovely, lovely app
13/09/2025
Spid3rmanluke

I mean, it’s exactly what it says it is, it’s sudoku, simple as that. Worth paying for it, I’d say, I like the UI and such, and especially the amount of options it has to customise how you play definitely puts it much above most other apps like this. I would ask that maybe you could allow auto-clearing notes to be turned on without move by move validation, but that alone is my only absolutely minuscule gripe.I might also ask for perhaps more theme colours and such. Thinking on that last point, I feel the waffle design seen in one of the app icons could actually be quite fun to use as a theme option, if that could be implemented well.It may go against the simplistic design this app seems to lean more towards, but, I think it being an optional thing mostly negates that, as you’d have to go out of your way to choose it. Of course, this is just a suggestion, you’ve no obligation to act on it if you don’t want to, I’m simply sharing my thoughts as a passive user, lol, it’ll be a great app regardless :)
Developer Response 28/09/2025
Thank you for the thoughtful review. More themes could be good, I have experimented with wallpapers behind the sudoku board. And your point on auto-clear being allowed when move by move validation is off has been noted. Thanks for playing!
Great minimalistic Sudoku app
16/05/2022
Tryannosaurus
The app does what it says it does and in a really nice and pleasing to look at way. The use of haptics also really elevates the UX and the lack of ads is very much appreciated.There are paid tiers but none of these are subscription and I feel they are quite reasonably priced, at least the Plus tier. The Pro tier may have to do a bit more to justify the cost.Would highly recommend this Sudoku app over the other ad-filled ones in the App Store.
Great minimalistic Sudoku app
16/05/2022
Tryannosaurus

The app does what it says it does and in a really nice and pleasing to look at way. The use of haptics also really elevates the UX and the lack of ads is very much appreciated.There are paid tiers but none of these are subscription and I feel they are quite reasonably priced, at least the Plus tier. The Pro tier may have to do a bit more to justify the cost.Would highly recommend this Sudoku app over the other ad-filled ones in the App Store.
Greyed numbers
18/11/2022
exitium88
Hello, I like the game, nicely designed, and I like having one puzzle a day to look forward to. 2 things that i would ask to change - 1) the undo button; if I’ve ‘penned’ a number in wrongly and I undo it, then when I undo it doesn’t replace the ‘pencil’ numbers I’d already inserted. 2) if all of one number has been completed that number is greyed out at the bottom - but if, for example, I want to clear out a pencilled number from a square I can’t because it’s greyed out. Otherwise it’s a cute app, thanks!

Developer Response
Hi,This has now been fixed as of version 2.0! When you turn on notes you should be able to remove any number even if it’s filled.
Greyed numbers
18/11/2022
exitium88

Hello, I like the game, nicely designed, and I like having one puzzle a day to look forward to. 2 things that i would ask to change - 1) the undo button; if I’ve ‘penned’ a number in wrongly and I undo it, then when I undo it doesn’t replace the ‘pencil’ numbers I’d already inserted. 2) if all of one number has been completed that number is greyed out at the bottom - but if, for example, I want to clear out a pencilled number from a square I can’t because it’s greyed out. Otherwise it’s a cute app, thanks!
Developer Response 09/01/2023
Hi,This has now been fixed as of version 2.0! When you turn on notes you should be able to remove any number even if it’s filled.
Honest Review
06/11/2024
ofa1 Hay
This is one of the greatest puzzle app of all the time, i always struggle with finding an app that combines great performance with great background colors and features. Also not to forget that multiple times I asked them for adding new features and they are always happy to listen and respond with integrating those features in beta versions!
Honest Review
06/11/2024
ofa1 Hay

This is one of the greatest puzzle app of all the time, i always struggle with finding an app that combines great performance with great background colors and features. Also not to forget that multiple times I asked them for adding new features and they are always happy to listen and respond with integrating those features in beta versions!

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

Version 3.7.5 21 Jul

Data Not Linked to You

The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data

Privacy practices may vary based, for example, on the features you use or your age. Learn More

Supported Features
- Dark Interface

Information

Provider: Ashish Selvaraj
Size: 21.6 MB
Category: Casual
Compatibility: Requires iOS 15 or later.

iPhone
Requires iOS 15 or later.

iPad
Requires iPadOS 15 or later.

iPod touch
Requires iOS 15 or later.

Apple Vision
Requires visionOS 1.0 or later.
Languages: English and 7 more

English, Dutch, Estonian, German, Simplified Chinese, Spanish, Thai, Turkish
Age Rating: 4+

4+

Learn More
In-App Purchases: Yes

Pro £4.99

Learn More

Developer Website

Privacy Policy

Supports

Game Center

Discover new games and play with friends. This game also features leaderboards and achievements.
Family Sharing

Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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Not Evil Sudoku

Ratings & Reviews

Lovely, lovely app

Great minimalistic Sudoku app

Greyed numbers

Honest Review

What’s New

App Privacy

Data Not Linked to You

Accessibility

Supported Features

Dark Interface

Information

Supports

Game Center

Family Sharing

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