Comparison

Sudoku Extreme Hard Puzzles vs Sudoku + Auto

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Sudoku Extreme Hard Puzzles

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.

Highlights
  • 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
Features
Read full description

Sudoku Extreme is a beautiful way to experience classic Sudoku number puzzles for both beginners & advanced players! It includes over 100,000 puzzles from easy to hard levels. It works in airplane mode without wifi, no ads, and no subscriptions. It's a great way to keep your mind active while relaxing to pass time. Each puzzle has only one solution. The puzzle comes with a few cells pre-filled. Your job is to fill the remaining empty cells. Fill the empty cells with numbers 1-9 in a way that each row, column and block (3x3 cells) only contains a single instance of the number 1-9. - Over 100,000 puzzles in 6 difficulty levels: beginner, easy, medium, hard, unfair and extreme. - Highly customizable with many beautiful themes as well as settings to customize the app exactly the way you like it. App comes with both light and dark amoled themes to be comfortable on your eyes! - The simple to use notes and hint features help you if you get stuck but I encourage spending time trying to figure out the puzzles without using hints. Cells filled with use of hints don't get any points. - Haptic feature gives a positive vibration when correct and negative vibration when wrong answer is filled in the sodoku puzzle. This can be disabled in settings. - If you make a mistake you can use the undo, delete and redo buttons. Note that each mistake deducts points from your overall score. - Long press the undo button to restart the game - After a game is finished, you get your overall stats like total time spent, best time, average time, overall score, hints used, mistakes made etc. Sudoku Extreme also comes with a graph of how your scores progress over time. As you play more difficult levels, you get more score. Each higher level gives twice the number of points as the previous level. - Game can be paused and you can resume the previous game when you come back. - Sudoku Extreme can automatically pre-fill the notes and auto-remove them when they are used in a row, column or block. Though I encourage disabling this setting and filling it manually as it makes your brain more active! Manually filling notes also gets you extra points! Long pressing the notes button lets you fill remaining notes automatically at any point in the game. Swiping up and down on the notes button still lets you toggle their display hidden/unhidden. - The quick fill feature lets you tap-and-hold a number and then simply tap cells and it will fill it with that number. - Long press a cell with only 1 candidate note to quick fill it. - Numbers show how many instances of that number are left to be filled in the puzzle. When a number has been used 9 times correctly, it hides itself. You can disable this setting if you like. - You can swipe up/down to enter notes numbers quickly without having to enter edit/note mode (setting needs to be switched on) - There is a setting to allow up to 3 mistakes without being penalized in your score. - "Export Scores" from the app. This can be used in Excel. - No intrusive ads, trackers, subscriptions, or other nonsense. - As a solo indie developer, there are ongoing costs of developing and maintaining the game. You can try out all difficulty levels and customizations during free trial. A one-time-only purchase unlocks over 100,000 puzzles and all difficulty levels for lifetime. It also helps me keep the game ad-free. No subscription. It's a small and fair amount which helps cover development costs of future updates. You can also leave me a positive rating on the app store as that helps get the word out to others! Thank you for supporting me. Hope you enjoy the puzzles :) Send me feedback at: pran@pranapps.com

About

Sudoku + Auto

This classic number puzzle game offers thousands of puzzles with adjustable difficulty levels. It features an innovative Auto-Note function that automatically fills in potential numbers, allowing players to focus on solving. Enjoy daily challenges, special events, and progress through increasingly difficult levels.

Highlights
  • Automatic note-taking
  • Thousands of puzzles
  • Multiple difficulty levels
  • Daily challenges
  • Special themed events
  • Instructional hints
  • Customizable palettes
Features
Read full description

Sudoku + Auto-Note is the best of classic sudoku, plus Auto-Note! No more missing a cell. No more overlooking a possibility. Auto-Note adds all the notes for you, so you can spend your time solving a puzzle instead of getting ready. SOMETHING FOR EVERYONE Whether you're a seasoned player or just starting out, this is the game for you. There are thousands of puzzles at all levels of difficulty. Start with Easy and work your way up to Diabolical. Auto-Note can add the notes for you, or you can turn it off and add notes yourself. Notes are updated when assigning a cell. If you like, Auto-Check will highlight your mistakes. Or, turn everything off for a more pencil-and-paper feel. 3 WAYS TO PLAY Daily Challenges Build your streak by completing daily challenge puzzles. Special Events Earn badges by completing event-themed puzzles before time runs out. Themes include Pirate's Plunder, Weekend Campout, Pharoah's Tomb, and lots more. Level Up Start by solving Easy puzzles and work your way up through Intermediate and Challenging. Go on to Fiendish and, finally, try your hand at truly Diabolical puzzles. MORE FEATURES Daily Streak Reminders - Enable this option and choose a time of day for a reminder. Instructional Hints - These explain the necessary strategy step by step. Or choose brief one-step hints. Palettes - Three choices keep things easy on the eyes, even in the dark. Single Solutions - Every puzzle has just one solution. Fix Notes - In a jam? Correct and add missing notes from the Mistakes (!) menu. Scoring - Toggle the optional scoreboard from the game settings menu. Timer - Toggle the optional timer from the game settings menu. Download Sudoku + Auto-Note now. Questions? Feature requests? Let us know what you think. Visit funnerware.com's Feedback page. Thanks for playing!

Screenshots

Sudoku Extreme Hard Puzzles4 screens
Sudoku + Auto4 screens

Verdict

The call

The clearest difference is ads: Sudoku Extreme Hard Puzzles at none against Sudoku + Auto's shown. Sudoku Extreme Hard Puzzles also leads on update cadence (every 5 days vs every 5 weeks) and ratings volume (827 vs 63). Sudoku + Auto's advantage is review sentiment (85% vs 64%) and iOS requirement (13.0 vs 15.0). On price, rating, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Sudoku Extreme Hard Puzzles sells 1 one-off in-app purchase and Sudoku + Auto sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for Sudoku Extreme Hard Puzzles against 4.6 for Sudoku + Auto. That said, the two scores are not equally well evidenced: Sudoku Extreme Hard Puzzles has 827 ratings behind it against 63, so its average is the more settled of the two. Written reviews are what separate them: 64% of Sudoku Extreme Hard Puzzles's written reviews are positive against 85% of Sudoku + Auto's.

UpkeepUpdate frequency

Sudoku Extreme Hard Puzzles ships an update every 5 days, Sudoku + Auto every 5 weeks. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Sudoku Extreme Hard Puzzles versus Sudoku + Auto: the parameters behind the verdict, then further details
ParameterSudoku Extreme Hard PuzzlesSudoku + Auto
PriceFreeFree
Rating4.5 (827 ratings)4.6 (63 ratings) — better
Positive reviews64.0% of reviews84.8% of reviews — better
Number of ratings827 — better63
Update frequencyEvery 5 days — betterEvery 5 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size29 MB8 MB
Age rating4+4+
DeveloperPranoy ChowdhuryFunnerware

Customer experience

Sudoku Extreme Hard Puzzles

All ratings827 ratings
Positive88.8%
Neutral3.7%
Negative7.5%
Written reviews125 reviews
Positive64.0%
Neutral11.2%
Negative24.8%

Sudoku + Auto

All ratings61 ratings
Positive88.5%
Neutral4.9%
Negative6.6%
Written reviews33 reviews
Positive84.8%
Neutral6.1%
Negative9.1%

Bugs and requests

Sudoku Extreme Hard Puzzles

Reported bugs

2 issues
  • Scoring system inconsistencies at higher levels
  • Animation issues causing delays in rapid input

Requested features

5 requests
  • Option to disable auto-fill notes
  • Ability to resume unfinished games
  • Coloring and advanced note-taking tools
  • Sync progress across devices
  • Difficulty level selector before starting a game

Sudoku + Auto

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Sudoku Extreme Hard Puzzles

One-time1
  • Sudoku Extreme Premium$9.99
6 purchases

Sudoku + Auto

One-time6
  • All Puzzle Levels$1.99
  • All Puzzle Levels$2.99
  • Ad Removal$3.99
Show 3 more
  • All Puzzle Levels2 variants$3.99
  • Premium Combo2 variants$4.99
  • Premium Combo2 variants$5.99

Questions

Is Sudoku Extreme Hard Puzzles free?
Sudoku Extreme Hard Puzzles is free to download, with in-app purchases available.
Is Sudoku + Auto free?
Sudoku + Auto is free to download, with in-app purchases available.
Which has better reviews, Sudoku Extreme Hard Puzzles or Sudoku + Auto?
Sudoku + Auto is rated higher. Sudoku Extreme Hard Puzzles averages 4.5 out of 5 from 827 ratings, while Sudoku + Auto averages 4.6 from 63 ratings.
Do Sudoku Extreme Hard Puzzles or Sudoku + Auto have ads?
Sudoku + Auto shows ads; Sudoku Extreme Hard Puzzles does not.
Which is updated more often, Sudoku Extreme Hard Puzzles or Sudoku + Auto?
Sudoku Extreme Hard Puzzles ships an update every 5 days, and Sudoku + Auto every 5 weeks. Most recently, Sudoku Extreme Hard Puzzles was updated on November 6, 2026 and Sudoku + Auto on November 3, 2026.

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