Good Sudoku by Zach Gage

Good Sudoku by Zach Gage

Sudoku that loves you

1.2K ratings
399 reviews
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • July 22, 2020
  • July 21, 2025

Features

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iphone
ipad
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About

This app offers a unique Sudoku experience with AI-powered hints and tools to reduce busywork. It features over 70,000 high-quality puzzles, multiple game modes, and detailed technique explanations to help users learn and improve their skills.

AI-powered hint system
Over 70,000 high-quality puzzles
Busywork-reducing tools
Multiple game modes (Good, Arcade, Eternal)
Daily puzzle challenges with leaderboards
5 difficulty levels
Custom mode for importing and sharing puzzles
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What users say

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What's New in Good Sudoku by Zach Gage

1.0.30

July 21, 2025

Thanks so much for playing Good Sudoku! We've made some minor bugfixes and some backend updates to the daily tournament system.

1

In-App Purchases

$4.99

Full Game Unlock

Disable ads, unlock all modes and statistics.

User reviews

Excellent Learning Tool

Nothing but good things to say about this app. It walks you gently through solving techniques in order of difficulty. Features to appreciate: auto-candidates, highlighting of individual candidate numbers (i.e., have it show all 1’s), easy to understand explanations, and revert to last error-free state. Ad-free cost is reasonable.
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Shouldn’t Require Internet

Great Sudoku app, can’t use it offline. That’s annoying.

Doesn’t load

I love sudoku, do it daily. I don’t love this app as i can’t work out how to play without the tips and auto entries that just make my brain redundant. I might not have correctly grasped why this is presented as the benefit of the app. I paid for full version but app just gets stuck in loading page every time I open it.
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Simply doesn't load

The app just gets stuck on loading and won't open, wouldn't bother reviewing if I hadn't paid for it.

Great when it works

I play this game daily so paid for the full version & bought it as a gift for another sudoku fan but I’m getting really fed up with unfixed (reported) bugs meaning I have to reinstall every month or two because it randomly stops loading up.

Nothing is saved so this means adjusting the settings to my liking & plodding through the unskippable intro every time then I’m pretty sure I’m playing the same puzzles in the same order but mercifully my memory isn’t good enough to yet be certain.

Factor in the hammering on my iPad battery my patience is extremely limited
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Developer apps

User experience

🐞

Reported Bugs

5 issues

Daily classic mode scoring issues

Bug

Game Center icon overlapping the puzzle board

Bug

Inconsistent note-taking behavior

Bug

Puzzles marked as unsolvable when they are solvable

Bug

Progress not saving properly

Bug

Requested Features

5 requests

Ability to disable daily leaderboard and achievements

Feature

Option to turn off auto-note and highlighting features

Feature

Improved visibility of grid lines and notes

Feature

Redo/undo functionality

Feature

Dark mode option

Feature

FAQ

What is Good Sudoku by Zach Gage?

Good Sudoku is a digital application that transforms your device into an AI-powered Sudoku companion. It's designed to help users of all levels learn, enjoy, and improve their Sudoku-playing skills through intelligent hints, unique tools, and a vast library of high-quality puzzles.

What are the key features of this Sudoku app?

The app boasts an AI-powered hint system that adapts to your progress, over 70,000 meticulously generated puzzles, and tools designed to minimize tedious tasks. It also offers various game modes, adjustable difficulty levels, and the ability to import and share your own puzzles.

How does the AI hint system work?

The AI solver runs in the background as you play. It can analyze your current answers and notes to identify the specific solving technique you need to progress, offering continuous support to boost your skills and understanding of complex strategies.

Is this app free to play?

The application is free to download and play, offering a substantial amount of content. However, it does include in-app purchases, which may unlock additional features or content for users who wish to enhance their experience further.

Who is Good Sudoku by Zach Gage for?

This app is ideal for anyone interested in Sudoku, whether you're a complete beginner looking to learn the basics or an experienced player seeking challenging puzzles and advanced learning tools. It caters to those who appreciate a well-designed, educational, and engaging puzzle experience.