Sudoku Extreme: Free no ads

Sudoku Extreme: Free no ads

Classic sudoku math puzzle

816 ratings
118 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • February 14, 2019
  • July 19, 2026

Features

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About

Engage your mind with classic Sudoku puzzles designed for all skill levels. Enjoy a customizable, ad-free experience with various themes and difficulty settings. Track your progress and stats while sharpening your logic skills.

Multiple difficulty levels
Customizable themes and settings
Notes and hint features
Haptic feedback
Undo, delete, and redo functions
Detailed game statistics and progress graphs
Quick fill and auto-fill options
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What users say

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+3

What's New in Sudoku Extreme

11

July 19, 2026

Thank you for supporting me. Hope you are enjoying the puzzles :) This update includes some highly requested features based upon your feedback: - Now you can try all difficulty levels and change settings & themes for free. While all features are free, I hope you support my development costs with the one-time-only in-app-purchase. - Added a new setting to highlight cells with only single numbers with different colour. Turned this setting off by default. - Fixed a bug where the new showing mistakes setting wasn't working if allowing up to 3 mistakes setting was off. - Fixed a bug where disabling show score setting wasn't working. - Added a new setting to allow up to 3 mistakes without being penalized in your score. Showing mistakes can also be disabled with a new setting. - Now you can swipe left on a difficulty level to reset scores. - Fixed a bug where app would report incorrect when long pressing to enter number. - Updated to latest iOS SDK and liquid glass. I am a small indie developer and need your help keep the lights on. I offer a beautiful app free of ads, subscriptions, trackers and analytics for the absolute best experience for my users. If you are enjoying the puzzles, please support me by purchasing the one-time-only in-app-purchase. This supports development of future updates. You can also leave me a positive rating on the app store as that helps get the word out to others! Send me feedback at: pran@pranapps.com

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In-App Purchases

$7.99

Sudoku Extreme Premium

Unlock all levels, themes and remove ads

User reviews

Kind of disappointing

I had hoped that this app would teach sudoku concepts, rather than just give a hint by telling you a number.
I had a great sudoku app that is no longer made, and it let me scan games in as well as taught different techniques. So when you asked for a hint, it would say something like “look for a naked pair” rather than saying “do you accept defeat?“ I think that’s just insulting and stupid because it doesn’t teach anything. It just fills in the number for you.
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Great App Hoping for More Future Updates & Features

Latest update was 3 years ago, and I purchased the premium version to support the developer. I really hope this app continues to receive updates, as it has a lot of potential. I do have a few suggestions:

* Add an option where using the “X” also removes notes from cells
* Include a toggle that allows up to 3 mistakes (can be edited) per game
* Expand customization options. More colors or even a color wheel would be great

Overall, I’d love to see this app continue to grow with more features and improvements.
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One of the better sudoku apps

Nice themes, good gameplay. I’d really like to see GameCenter syncing of my scores between devices.

GREAT App

Points for stating how you score the puzzle, with a simple strategy to maximize points. BIG niggle: I would like to reset the statistics preferably each difficulty separately. I like to play 25 games at a go. Currently the only way I see is to delete and DL. Small niggle: currently if you abandon a game (can’t solve) the game isn’t noted in the games played statistic. There doesn’t have to be a penalty but a simple counter would be nice.
Finally, the game before paying the app came off sort of clunky to me, if you find this, ignore it and unlock the full game. Worth every penny
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Response from developer

Hello The latest update now includes a feature where you can just swipe left on a level to reset its scores. So now, you don't need to delete and redownload the app. Hope you update your review after trying :) Pran

No access to hard sudokus

App does all the work and you can’t turn off the cheats without paying. Uninstalling.

Developer apps

User experience

🐞

Reported Bugs

2 issues

Scoring system inconsistencies at higher levels

Bug

Animation issues causing delays in rapid input

Bug

Requested Features

5 requests

Option to disable auto-fill notes

Feature

Ability to resume unfinished games

Feature

Coloring and advanced note-taking tools

Feature

Sync progress across devices

Feature

Difficulty level selector before starting a game

Feature

FAQ

What is Sudoku Extreme: Classic Number?

Sudoku Extreme is a mobile application that offers classic Sudoku puzzles for players of all levels. It provides a relaxing way to keep your mind active, featuring a single solution for each puzzle. The app allows you to fill in missing numbers based on Sudoku rules.

What are the key features of Sudoku Extreme?

Key features include six difficulty levels from beginner to extreme, customizable themes with light and dark modes, and helpful tools like notes and hints. It also offers haptic feedback, undo/redo options, detailed game statistics, and progress tracking.

How much does Sudoku Extreme cost?

The app is free to download and play, with no ads or subscriptions. Advanced levels, themes, and settings customization are available through a small, one-time in-app purchase to support development.

What devices is Sudoku Extreme compatible with?

While specific device compatibility is not detailed, the app is designed for mobile use. It offers both light and dark amoled themes for eye comfort, suggesting it is available on devices that support these display features.

What are the common use cases for Sudoku Extreme?

This app is ideal for passing time, exercising your brain, and improving logical thinking skills. It's suitable for both beginners learning Sudoku and advanced players seeking a challenging experience, all within a customizable and ad-free environment.