Hue9: Color Sudoku

Name: Hue9: Color Sudoku
Rating: 4.6 (38 reviews)
Author: David Cardena Formoso

Daily, Relaxing & No Ads

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

38 Ratings
Age Rating

4+
Years
Category

Puzzle
Developer

David Cardena Formoso
Language

EN
+ 5 More
Size

13.1
MB

Color Sudoku with Daily Grid, Zen Mode, symbols and no ads. A calm logic puzzle for every level. Meet Hue9, color Sudoku that goes beyond color. Solve classic 9×9 Sudoku with colors instead of numbers. Choose the original Colors only board or pair every hue with a unique symbol for a puzzle that never relies on color alone. ACCESSIBLE BY DESIGN • Colors only or Colors + symbols • VoiceOver descriptions for every cell • Support for Larger Text, Increased Contrast, Dark Mode, Differentiate Without Color, and Reduce Motion • Clear layouts designed for iPhone and iPad PLAY YOUR WAY • Zen Mode removes the timer, score, mistake limit, and pressure • Four difficulty levels, from Easy to Expert • Hints, notes, undo, highlights, and saved games • Themes, alternate icons, and light or dark appearance A NEW PUZZLE EVERY DAY Join the shared Daily Grid, build your streak, and compare your result through Game Center. LEARN AS YOU PLAY Start with the interactive lesson, then explore the visual Sudoku Guide—from the basic rule to advanced solving techniques. Whether you are a Sudoku expert or discovering logic puzzles for the first time, Hue9 offers a calm, tactile, and beautifully focused challenge.

Ratings & Reviews

4.6

out of 5

38 Ratings

Beautiful But Puzzles Repeat
May 16
Mage7667
I love this puzzle! It’s peaceful and the haptics are enjoyable. I do the Daily Grid every morning. But I’ve noticed that the puzzles in the Daily Grid repeat from time to time. It’s very frustrating, because mathematically, we should have endless puzzles. When a puzzle repeats, I sometimes do other things to challenge myself, but it’s always a let down when I notice I got a repeat for that day.

Developer Response
Thank you so much for the thoughtful feedback, and for making Daily Grid part of your morning routine.You were absolutely right: the Daily Grid puzzles were repeating more often than they should. I’ve now replaced the old generation system with a much stronger one, so each day now gets a fresh shared puzzle and repeats should no longer happen.Really appreciate you pointing this out. It helped make Hue9 better.
Beautiful But Puzzles Repeat
May 16
Mage7667

I love this puzzle! It’s peaceful and the haptics are enjoyable. I do the Daily Grid every morning. But I’ve noticed that the puzzles in the Daily Grid repeat from time to time. It’s very frustrating, because mathematically, we should have endless puzzles. When a puzzle repeats, I sometimes do other things to challenge myself, but it’s always a let down when I notice I got a repeat for that day.
Developer Response May 18
Thank you so much for the thoughtful feedback, and for making Daily Grid part of your morning routine.You were absolutely right: the Daily Grid puzzles were repeating more often than they should. I’ve now replaced the old generation system with a much stronger one, so each day now gets a fresh shared puzzle and repeats should no longer happen.Really appreciate you pointing this out. It helped make Hue9 better.
The app I’ve been looking for!
Jul 12
mlosangeles
I love playing color sudoku, and have been looking for a simplified, beautifully laid out app version for many years. Was seriously thrilled to finally find this one! The design is super clean, pretty, and wonderfully customizable. Absolutely love it. What I don’t love is the competitive-style play, and really wish it could be turned off. I want to play to relax and wind down, not be stressed about my time or losing points over a misclick. I just don’t need to track my points in order to keep wanting to play. I’ve already been playing (other, much less aesthetically pleasing) color sudoku apps for years.Ideally would like options to toggle off the points mode, as well as the option turn off individual features such as the timer, immediate notifications for wrong moves, and losing points for wrong moves or hints. If I’ve made a mistake and get to the end of the puzzle and it’s not a win, I’ll know there’s a mistake. Or, another nice to have feature could be a “check for errors” button. Other small nitpicky annoyances: - the hint button is really easy to hit accidentally. I never want hints anyway, but losing points for hitting it makes its current placement extra stressful. Or maybe don’t move it, but add a confirmation check before giving the hint?- often when I leave the app mid-game, then go back to the app, the app goes back to the home screen and that game is lost. I’ve played other similar apps that never did this, so not sure what the issue is here. (Note, this is just when I move out of the app; I’m not talking about closing the app and trying to go back.)Anyway, overall I’m still so happy this app exists. Thank you!!

Developer Response
Thank you so much for the detailed feedback!I took comments like yours to heart while building version 2.0.0, which is now finished and ready to be released.It includes a new Zen Mode for playing without points, timers, or pressure, plus game resume so you won’t lose your puzzle when leaving the app. I’ve also improved how mistakes and hints work to make the whole experience much more relaxing.Thanks again for helping me make the app better, I hope you’ll love 2.0.0 and maybe improve the rating!
The app I’ve been looking for!
Jul 12
mlosangeles

I love playing color sudoku, and have been looking for a simplified, beautifully laid out app version for many years. Was seriously thrilled to finally find this one! The design is super clean, pretty, and wonderfully customizable. Absolutely love it. What I don’t love is the competitive-style play, and really wish it could be turned off. I want to play to relax and wind down, not be stressed about my time or losing points over a misclick. I just don’t need to track my points in order to keep wanting to play. I’ve already been playing (other, much less aesthetically pleasing) color sudoku apps for years.Ideally would like options to toggle off the points mode, as well as the option turn off individual features such as the timer, immediate notifications for wrong moves, and losing points for wrong moves or hints. If I’ve made a mistake and get to the end of the puzzle and it’s not a win, I’ll know there’s a mistake. Or, another nice to have feature could be a “check for errors” button. Other small nitpicky annoyances: - the hint button is really easy to hit accidentally. I never want hints anyway, but losing points for hitting it makes its current placement extra stressful. Or maybe don’t move it, but add a confirmation check before giving the hint?- often when I leave the app mid-game, then go back to the app, the app goes back to the home screen and that game is lost. I’ve played other similar apps that never did this, so not sure what the issue is here. (Note, this is just when I move out of the app; I’m not talking about closing the app and trying to go back.)Anyway, overall I’m still so happy this app exists. Thank you!!
Developer Response Jul 31
Thank you so much for the detailed feedback!I took comments like yours to heart while building version 2.0.0, which is now finished and ready to be released.It includes a new Zen Mode for playing without points, timers, or pressure, plus game resume so you won’t lose your puzzle when leaving the app. I’ve also improved how mistakes and hints work to make the whole experience much more relaxing.Thanks again for helping me make the app better, I hope you’ll love 2.0.0 and maybe improve the rating!
Great if you struggle with numbers
Oct 9
susansunshine
I love Sudoku and puzzles, but I have always struggled to comprehend numbers (suspected dyscalculia but doctors won’t test me as an adult, it wasn’t a diagnosis when I was a kid) so this is fantastic for me. It removes the confusion and misreading for me and allows me to complete puzzles without making simple mistakes such as misreading a 2 for a 7.
Great if you struggle with numbers
Oct 9
susansunshine

I love Sudoku and puzzles, but I have always struggled to comprehend numbers (suspected dyscalculia but doctors won’t test me as an adult, it wasn’t a diagnosis when I was a kid) so this is fantastic for me. It removes the confusion and misreading for me and allows me to complete puzzles without making simple mistakes such as misreading a 2 for a 7.
Like it
Sep 2
Too bad you changed it
Glad you can go back to just colors, the shape version was too busy with the shapes

Developer Response
Thank you so much for the 5 stars and for updating your review! Feedback like yours is always super helpful.I probably could have explained the feature a bit better initially. Hue9 includes symbols to make the game fully accessible for colorblind players who need visual support. Apple has a system setting called "Differentiate Without Color," but it was forcing symbols on by default.To fix this and give everyone full control, I've updated it with 3 distinct options in the settings: Automatic (follows your iOS system setting), Colors (classic colors-only mode, just like before), and Symbols (adds shapes on top of the colors).Thanks again for helping make the app better!
Like it
Sep 2
Too bad you changed it

Glad you can go back to just colors, the shape version was too busy with the shapes
Developer Response Sep 3
Thank you so much for the 5 stars and for updating your review! Feedback like yours is always super helpful.I probably could have explained the feature a bit better initially. Hue9 includes symbols to make the game fully accessible for colorblind players who need visual support. Apple has a system setting called "Differentiate Without Color," but it was forcing symbols on by default.To fix this and give everyone full control, I've updated it with 3 distinct options in the settings: Automatic (follows your iOS system setting), Colors (classic colors-only mode, just like before), and Symbols (adds shapes on top of the colors).Thanks again for helping make the app better!

Performance improvements and bug fixes. Thanks for playing Hue9.

Version 2.0.3 Sep 2

Data Not Linked to You

The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Supported Features
- VoiceOver
- Larger Text
- Dark Interface
- Differentiate Without Color Alone
- Sufficient Contrast
- Reduced Motion

For more information, visit the developer’s accessibility website .

Information

Seller: David Cardena Formoso
Size: 13.1 MB
Category: Puzzle
Compatibility: Requires iOS 17.6 or later.

iPhone
Requires iOS 17.6 or later.

iPad
Requires iPadOS 17.6 or later.

Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later.

Apple Vision
Requires visionOS 1.3 or later.
Languages: English and 5 more

English, French, German, Japanese, Simplified Chinese, Spanish
Age Rating: 4+

4+

Learn More
In-App Purchases: Yes

Hue9 Pro $9.99

Learn More

Developer Website

Privacy Policy

Supports

Game Center

Discover new games and play with friends. This game also features leaderboards.
Family Sharing

Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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Hue9: Color Sudoku

Ratings & Reviews

Beautiful But Puzzles Repeat

The app I’ve been looking for!

Great if you struggle with numbers

Like it

What’s New

App Privacy

Data Not Linked to You

Accessibility

Supported Features

VoiceOver

Larger Text

Dark Interface

Differentiate Without Color Alone

Sufficient Contrast

Reduced Motion

Information

Supports

Game Center

Family Sharing

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