# •sudoku

> Colorful, customizable sudoku game with over a million free puzzles. (iPhone/iPad app by Sarah Pierce.)

- Source: https://appshunter.io/ios/app/sudoku/id441153803 (this page in markdown: same URL + `.md`)
- Developer: [Sarah Pierce](https://appshunter.io/developer/406813189)
- Category: Games, Education, Board, Puzzle
- Price: Free with in-app purchases
- Rating: 4.80/5 from 1,056 App Store ratings · 200 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 31 MB
- Languages: American English
- Released: 2011-07-20
- Data updated: 2026-08-29
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sudoku/id441153803/reviews.md

## What is •sudoku?

Rainbow sudoku with *1 million* free puzzles to play!

Heart Sudoku is a beautiful, colorful way to enjoy sudoku. Gems flip into place when you get an answer right. Tap a number to make it glow and solve the puzzle even faster. A rainbow light show celebrates your win!

There are lots of options for how to play: two keypads for faster note entry, or one with a note toggle for those who don't use many notes. Turn the timer on to compete with other players, or off to relax, whichever suits your mood. Let auto-note do the busywork for you, or leave it off for a bigger challenge. Be sure to try all three puzzle themes!

• 1 million puzzles, five levels. All Free!
• Three different puzzle themes
• Tracks your averages, records, and more
• See how you stack up against other players
• Turn off the timer for a relaxing game

## Key features

- 1 million free puzzles
- Three puzzle themes
- Customizable note entry
- Optional timer for competition
- Relaxing play mode
- Progress tracking

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Gentle Puzzle Pack #1 | $0.99 | one-time |
| Easy Puzzle Pack #1 | $0.99 | one-time |
| Medium puzzle pack #1 | $0.99 | one-time |
| Hard puzzle pack #1 | $0.99 | one-time |
| Extreme puzzle pack #1 | $0.99 | one-time |
| Mega puzzle pack | $3.99 | one-time |
| Gentle puzzle pack #2 | $0.99 | one-time |
| Extreme puzzle pack #3 | $0.99 | one-time |
| Extreme puzzle pack #4 | $0.99 | one-time |
| Premium | $1.99 | one-time |


## What do users think of •sudoku?

Overall sentiment: positive

**Pros**

- 👍 Great game, fun and addictive
- 🎨 Colorful and visually appealing design
- 📊 Useful stats and progress tracking
- 🧠 Challenging and mentally stimulating
- 🔍 Helpful features like pencil marks and highlighting

**Cons**

- 🐛 Glitches with timer and stats not working properly
- 📢 Loud and intrusive ads
- 🔍 Difficulty with small touch targets and accidental inputs
- 🔌 Drains battery life quickly

**Commonly reported bugs**

- Timer keeps crashing or not starting
- Ads prevent returning to the game
- Scores and stats not updating correctly

**Most requested features**

- Option to turn off timer and comparisons
- Landscape mode support
- More difficulty levels beyond 'extreme'
- Ability to customize colors and themes

## Recent user reviews (10 of 200)

All indexed reviews: https://appshunter.io/ios/app/sudoku/id441153803/reviews.md

### 5/5 — I love how colorful it is!

*2026-01-30, version 3.1*

But please sell some DLC.  The 9 symbols don’t even need to be numbers for nearly all the players.

### 3/5 — Glitching

*2024-11-19*

This has been my fav sudoku app for a while. But it recently developed a glitch on i think the easy level or the gentle level where the timer doesn’t start sometimes. And when that happens your record is permanently in the top 100% of user and you can’t reset it without deleting and no the app and trying again from the beginning… then you do it again because it will happen again. Other than this glitch the app was great. But i had to delete it.

### 1/5 — Religion

*2024-10-12, version 3.1*

This is filled with religious ads. I’m done

### 3/5 — Loud ads

*2024-05-31, version 3.1*

The game itself is great. The ads are loud making it unsuitable for quiet entertainment

### 5/5 — Timer keeps crashing

*2023-12-12, version 3.1*

I love this puzzle due to the brilliant colors & ability to put the numbers in the margin.

Unfortunately, the timer keeps crashing …..no time on board. This is a nice feature & I continually try to beat my time.
So, I have to delete it & download it again. Pain in the butt.

### 5/5 — Best sudoku app

*2023-05-05, version 3.0*

It's still my favorite Sudoku app. I paid for add free version years ago and I still love it to this day. 5 stars always!

### 3/5 — Ads make app stop

*2023-04-17, version 3.0*

The X to close ads sometimes will not register a tap/touch so one cannot continue back to game. 
Only way to get back game is to turn off device a restart.

### 5/5 — Sudoku Love!!!

*2023-03-11*

I love this app. You can pick how hard (or easy) you want it to be. The layout is beautiful. It has everything you need to make guesses that don't count against you while you're figuring out what number fits where. What more could you want. It does have some advertising in between games, but so far they aren't obtrusive with loud sound and it's easy to "X" them away.

The addition of sound was a bad idea for me. There is no option to turn the sound off. Out in public, I have to turn the sound on my phone off and it might take several days for me to remember to turn my sound back on.

### 4/5 — it’s so close to being perfect for me

*2023-03-10*

my main gripe is that there is no option to turn off the autocorrection. it doesn’t let you make mistakes. thats not fun. 

it’s a super beautiful accomidative version of a classic and I love it for that, but it needs to let me make mistakes if I want to.

### 4/5 — How can I make a larger number?

*2023-01-07, version 3.0*

I tried to find a pencil icon to make the number bigger but I cannot find it.

## Frequently asked questions about •sudoku

### What is this app?

This app offers a visually engaging way to play sudoku with over one million free puzzles. It features colorful themes, customizable gameplay options, and progress tracking.

### What are the key features?

Key features include access to 1 million free puzzles, three different puzzle themes, customizable note entry options, an optional timer for competitive play, and the ability to turn off the timer for a more relaxing experience. It also tracks your averages and records.

### Is this app free to play?

Yes, the app offers over one million free puzzles. However, it does contain advertisements and may offer in-app purchases.

### Who is this app for?

This app is designed for anyone who enjoys playing sudoku or other logic puzzles. It's suitable for both casual players looking for a relaxing game and those who want to challenge themselves with timed play and track their performance.

### Can I play without a timer?

Yes, you can turn the timer off to play the puzzles at your own pace, allowing for a more relaxing and less competitive experience. This mode is ideal for unwinding or focusing on solving the puzzle without time pressure.

## Version history (last 5 releases)

### 3.1 — 2023-07-03

This update includes a few bug fixes. Thanks so much to everyone who has sent feedback! I hope you enjoy the update. -Sarah

### 3.0 — 2020-06-10

What's new:
- Updates to meet new App Store requirements
- Improved support for all screen sizes

Thanks so much to everyone who has sent me feedback! Your comments are so, so helpful, and I really appreciate when people take the time to send in bug reports and other ideas. If you notice any new issues please let me know. I hope you enjoy the update! -Sarah

### 2.2 — 2017-01-27

Here's whats new:
- I split Autonote into two separate features: one that autofills notes for you at the start of a game, and one that autodeletes notes as you enter numbers. If you have both of these turned on it will be the same as the previous feature.
- I added a second page of settings. Click "More" in the lower right of the settings menu to see it. From this page you can switch to using the old method of calculating your average time (average ALL your games instead of just the most recent 20), and you can also turn the old 30 second penalty for wrong entries back on in case you enjoy that type of punishment :)
- I fixed bug where all the average times listed on the stats page were showing the same value
- I fixed bug causing the Stats page to not refresh every time it is opened
- I fixed a bug where the average times were not actually using your most recent 20 games (they were using the FIRST 20 of a 50-game list of recent scores, not the last 20)
- I hopefully fixed a bug where sometimes all the buttons disappear from the main menu, but I am not 100% sure about this one. Please let me know if this still happens to you!
- Your device will now sleep after showing an ad to avoid battery drain.

Thanks so much to everyone who sent feedback and I hope you guys enjoy the update! ~Sarah

### 2.1 — 2016-12-04

What's new in the latest updates? Wow, a lot!

- Unlimited free puzzles! Now with 1 million free puzzles total!
- Retina graphics everywhere!
- Full screen on long phones!
- Faster loading due to some optimization with the graphics.
- No more 30 second penalty. Why? Because nobody liked it! You can still see how many mistakes you made at the end of each game though if you like to aim for no mistakes.
- New auto-note feature: when auto-note is on it automatically removes notes when you enter a number to make your life easier. Some people may feel this makes life TOO easy, which is why this feature is off by default.
- New settings menu: click the gear button in the lower righthand corner of the gameplay page to to change the keypad style or puzzle theme,  turn auto-note on, turn the timer off, reset a game, or undo and redo moves.
- Your average is now based on your most recent 20 games instead of ALL of the games you have ever played in that level. This makes it a lot easier easier to bring your average time down as you get better at the game, especially if you have been playing for a long time and have accumulated a lot of scores.
- Dual-keypad option: two keypads let you quickly enter answers or notes without having to press the note button. This option is now available on long iPhones in addition to iPads. (Sorry iPhone 4 users--I couldn't make the dual keypads fit on the smaller screen without making the board feel too small).
- Since I have removed the free puzzle cap, so the game is now ad supported. You can still play without ads by paying to remove them on the "Store" page. If you previously paid for extra puzzles you will not see any ads.
- I fixed the wackiness with the stats reported on the main page. Thanks to the users who emailed about this!
- I added a reset stats button to the stats page. You can reset all levels at once or  one at a time.
- You can now delete old puzzles from the in progress menu by swiping left.
- Some users have reported crashing. This update should fix the issue, but please send me an email if you have any more trouble!

Thanks so much to everyone who sent feedback via email! I make the game by myself so feedback like this really helps me a lot. I hope you guys enjoy the update! Best, Sarah

### 2.0 — 2016-11-30

What's new? Wow, a lot!

- Unlimited free puzzles! Now with 1 million free puzzles total!
- Retina graphics everywhere!
- Full screen on long phones!
- Faster loading due to some optimization with the graphics.
- No more 30 second penalty. Why? Because nobody liked it! You can still see how many mistakes you made at the end of each game though if you like to aim for no mistakes.
- New auto-note feature: when auto-note is on it automatically removes notes when you enter a number to make your life easier. Some people may feel this makes life TOO easy, which is why this feature is off by default.
- New settings menu: click the gear button in the lower righthand corner of the gameplay page to to change the keypad style or puzzle theme,  turn auto-note on, turn the timer off, reset a game, or undo and redo moves.
- Your average is now based on your most recent 20 games instead of ALL of the games you have ever played in that level. This makes it a lot easier easier to bring your average time down as you get better at the game, especially if you have been playing for a long time and have accumulated a lot of scores.
- Dual-keypad option: two keypads let you quickly enter answers or notes without having to press the note button. This option is now available on long iPhones in addition to iPads. (Sorry iPhone 4 users--I couldn't make the dual keypads fit on the smaller screen without making the board feel too small).
- Since I have removed the free puzzle cap, so the game is now ad supported. You can still play without ads by paying to remove them on the "Store" page. If you previously paid for extra puzzles you will not see any ads.
- I fixed the wackiness with the stats reported on the main page. Thanks to the users who emailed about this!
- I added a reset stats button to the stats page. You can reset all levels at once or  one at a time.
- You can now delete old puzzles from the in progress menu by swiping left.
- Some users have reported crashing. I hope this update fixes the issue, but please send me an email if you have any more trouble.

Thanks so much to everyone who sent feedback via email! I make the game by myself so feedback like this really helps me a lot. I hope you guys enjoy the update! Best, Sarah

## Apps similar to •sudoku

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Sudoku Quest - Puzzle Games](https://appshunter.io/ios/app/sudoku-quest-puzzle-games/id671755288) | 4.7 (1,852) | Free | Games |
| [Sudoku - Brain Puzzle Games](https://appshunter.io/ios/app/sudoku-brain-puzzle-games/id1442749804) | 4.8 (306,510) | Free | Games |
| [Sudoku ▦](https://appshunter.io/ios/app/sudoku/id1407780576) | 4.7 (104,108) | Free | Games |
| [Sudoku Color - Classic Puzzle!](https://appshunter.io/ios/app/sudoku-color-classic-puzzle/id1503221765) | 4.8 (34,525) | Free | Games |
| [Killer Sudoku - Brain Games](https://appshunter.io/ios/app/killer-sudoku-brain-games/id1532397340) | 4.7 (26,573) | Free | Games |
| [Sudoku·](https://appshunter.io/ios/app/sudoku/id839681682) | 4.7 (17,294) | Free | Games |

## More apps by Sarah Pierce

- [Conundra](https://appshunter.io/ios/app/conundra/id406813186)
- [Killer Sudoku!](https://appshunter.io/ios/app/killer-sudoku/id437747279)
- [Sudoku School!](https://appshunter.io/ios/app/sudoku-school/id441158805)
- [*SUDOKU](https://appshunter.io/ios/app/sudoku/id463774685)
- [Word Search +](https://appshunter.io/ios/app/word-search-plus/id464846439)

All apps by Sarah Pierce: https://appshunter.io/developer/406813189

## Related topics

[sudoku quick games](https://appshunter.io/ios/topics/sudoku-quick-games) · [animal sudoku kids puzzle](https://appshunter.io/ios/topics/animal-sudoku-kids-puzzle)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*