Comparison

Sudoku HD! vs Eric's Sudoku

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

Head to head
About

Sudoku HD!

Experience Sudoku with a feudal Japan theme and stunning graphics. This app offers dual keypads for efficient input, smart note-taking features, and optional error checking. Enjoy multiple difficulty levels and thousands of puzzles.

Highlights
  • Dual keypad entry
  • Smart notes feature
  • Optional auto-notes
  • Optional error checking
  • Multiple difficulty levels
  • Thousands of puzzles
Features
Read full description

Take a journey to feudal Japan with Sudoku Free HD. With beautiful graphics and killer features, Sudoku Free HD is the best Sudoku app available for the iPad. DUAL KEYPAD ENTRY Two separate keypads, one for entries and one for notes, allow you to enter values quickly and easily. No more tedious switching between entry mode and note mode to complete your puzzle. SMART NOTES The optional auto-notes feature enters all of the notes into the puzzle for you and keeps them updated as you solve. If you don't want that much help, the optional smart notes feature automatically deletes values from notes you have entered manually when they are no longer valid. ERROR CHECKING The optional error checker tells you when you have entered an incorrect or illogical value, allowing you to catch errors early and preventing needless frustration. MULTIPLE DIFFICULTY LEVELS Five difficulty levels, from easy to insane, ensure that you will be able to find a puzzle that matches your skill level. With 3,000 total puzzles, you won't run out of puzzles any time soon. Download Sudoku Free HD for free today and start playing Sudoku the way it was meant to be played!

About

Eric's Sudoku

Engage in a classic number puzzle game with multiple difficulty levels, from simple to expert. Enjoy beautiful graphics, smooth gameplay, and helpful features like hints and note-taking. Unlock new puzzle packs by earning tokens through achievements.

Highlights
  • 5 difficulty levels
  • Over 5,500 puzzles
  • Hint button
  • Pen and pencil modes
  • Token-based achievement system
  • Auto-remove pencil notes
  • Highlight matching numbers
Features
Read full description

Play this fun and easy-to-use Sudoku game on your iPhone or iPad. Great for beginners and a challenge for experts. It has beautiful graphics, smooth game play and subtle sound effects. Sudoku is a number puzzle game where you try to fill in the blanks. Each digit (from 1 to 9) can only appear once in each row, column, or 3x3 sub-grid. There is only one solution for each puzzle. Here's an example: If a row looks like this: 1 3 _ 4 5 6 8 9 7 Then the number 2 is the only possible answer for that empty space, because the numbers 13456789 are all already in that row. By looking to see which numbers are already in a row, column and 3x3 sub-grid you can figure out what numbers go in each cell. (It sounds more complicated than it is! The "SIMPLE" level puzzles make it pretty easy to get started.) If you love puzzle and card games try my other games too! DESCRIPTION Eric's Sudoku has 5 difficulty levels of puzzles from SIMPLE to EXPERT. Tap the "Hint" button if you get stuck. Use the pen to enter your answers and use the pencil to keep notes. Earn tokens as you solve puzzles and complete achievements to unlock more Puzzle Packs. FEATURES • Fun achievements to earn Tokens • Great for beginners or experts • Over 5,500 puzzles • Beautiful art, cool particle effects and a fun user-interface • Tap a number to highlight all matching numbers • Auto-remove pencil notes feature • Subtle sound effects so you can enjoy your music • Game state saved when interrupted • Portrait & Landscape support on iPad • Right hand/Left hand settings on iPad • Hide pencil for quicker play Follow me on Facebook! http://www.facebook.com/sniderware Try my new daily puzzle game, Eric's Ultimate Puzzles! https://sniderware.com/erics-sudoku-privacy-policy

Screenshots

Eric's Sudoku4 screens

Verdict

The call

The clearest difference is rating: Eric's Sudoku at 4.7 against Sudoku HD!'s 4.5. Eric's Sudoku also leads on device support (3 vs 1). Sudoku HD!'s advantage is iOS requirement (12.0 vs 15.6). On price, review sentiment, ratings volume and update cadence 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 HD! sells 11 one-off in-app purchases and Eric's Sudoku sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Eric's Sudoku holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 707 and 1.8K respectively. Written reviews point the same way: 87% of Sudoku HD!'s written reviews are positive against 91% of Eric's Sudoku's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on September 19, 2026 and September 22, 2026 respectively.

Scorecard3 real differences · 7 level
Sudoku HD! versus Eric's Sudoku: the parameters behind the verdict, then further details
ParameterSudoku HD!Eric's Sudoku
PriceFreeFree
Rating4.5 (707 ratings)4.7 (1.8K ratings) — better
Positive reviews86.9% of reviews90.8% of reviews — better
Number of ratings7071.8K — better
Update frequencyEvery 6 monthsEvery 6 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPadiPhone, iPad, iPod — better
Requires iOS12.0 — better15.6
Further details — not scored
Size128 MB53 MB
Age rating4+4+
DeveloperOptime Software LLCEric Snider

Customer experience

Sudoku HD!

All ratings707 ratings
Positive88.4%
Neutral5.0%
Negative6.6%
Written reviews274 reviews
Positive86.9%
Neutral2.9%
Negative10.2%

Eric's Sudoku

All ratings1,778 ratings
Positive95.2%
Neutral3.0%
Negative1.8%
Written reviews152 reviews
Positive90.8%
Neutral3.9%
Negative5.3%

User reviews

Sudoku HD!

From 707 App Store ratings

What we love

  • 👍 Easy to use
  • 🤓 Challenging puzzles
  • 🎶 Relaxing music
  • 💻 Great interface
  • 🧠 Keeps mind active

Room to improve

  • 🔍 Too many ads
  • 🔄 Crashes and freezes
  • 🎨 Dislike new layout changes
  • 🤦‍♂️ Penalizes for mistakes
  • 🔒 Cannot revert to old version

Eric's Sudoku

From 1.8K App Store ratings

What we love

  • 👍 Well-designed interface
  • 🚀 Smooth gameplay
  • 💡 Helpful features like pencil mode
  • 👍 Variety of difficulty levels
  • 👍 Enjoyable and challenging

Room to improve

  • 🔒 Concerns about monetization and ads
  • 🐛 Occasional bugs and crashes
  • 🔋 Drains battery life
  • 👎 Buttons too close to ads

Bugs and requests

Sudoku HD!

Reported bugs

3 issues
  • Puzzles marked as completed when they are not
  • Crashes when trying to play 'insane' level puzzles
  • Purchases not restoring across devices

Requested features

4 requests
  • Allow resetting of puzzles
  • Provide level selection options
  • Automatically clear notes when number is entered
  • Add landscape mode support

Eric's Sudoku

Reported bugs

2 issues
  • Inconsistent saving of progress
  • Puzzle ratings not always accurate

Requested features

3 requests
  • Dark mode option
  • Ability to disable mistake highlighting
  • More puzzle packs and higher difficulty levels

In-app purchases

11 purchases

Sudoku HD!

One-time11
  • Puzzle Pack - Showa$0.99
  • Puzzle Pack - Kurikara$0.99
  • Puzzle Pack - Subushi$0.99
Show 8 more
  • Puzzle Pack - Miura$0.99
  • Puzzle Pack - Kasagi$0.99
  • Puzzle Pack - Ishizu$0.99
  • Puzzle Pack - Sakai$0.99
  • Puzzle Pack - Genpei$0.99
  • Puzzle Pack - Norada$0.99
  • Puzzle Pack - Meiji$0.99
  • Puzzle Pack - Taisho$0.99
4 purchases

Eric's Sudoku

One-time4
  • Some Tokens$0.99
  • More Tokens$2.99
  • A lot of Tokens$3.99
Show 1 more
  • Unlimited Tokens & remove ads$4.99

Questions

Is Sudoku HD! free?
Sudoku HD! is free to download, with in-app purchases available.
Is Eric's Sudoku free?
Eric's Sudoku is free to download, with in-app purchases available.
Which has better reviews, Sudoku HD! or Eric's Sudoku?
Eric's Sudoku is rated higher. Sudoku HD! averages 4.5 out of 5 from 707 ratings, while Eric's Sudoku averages 4.7 from 1.8K ratings.
Do Sudoku HD! or Eric's Sudoku have ads?
Both Sudoku HD! and Eric's Sudoku show ads.
Which is updated more often, Sudoku HD! or Eric's Sudoku?
Sudoku HD! ships an update every 6 months, and Eric's Sudoku every 6 months. Most recently, Sudoku HD! was updated on September 19, 2026 and Eric's Sudoku on September 22, 2026.

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