# Hueku: Color Sudoku Puzzle — Relaxing Brain & Logic Games > Color-based Sudoku logic puzzle game with multiple difficulty levels. (iPhone/iPad app by Hermes Inteligencia Digital Ltda.) - Source: https://appshunter.io/ios/app/hueku-color-sudoku-puzzle/id6776482970 (this page in markdown: same URL + `.md`) - Developer: [Hermes Inteligencia Digital Ltda](https://appshunter.io/developer/1896694873) - Category: Games, Entertainment, Casual, Puzzle - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 7 MB - Languages: American English, Arabic, Dutch, French (France), German (Germany), Hindi, Italian, Japanese, Korean, Polish and 5 more - Released: 2026-07-27 - Data updated: 2026-08-29 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/hueku-color-sudoku-puzzle/id6776482970/reviews.md ## What is Hueku? Hueku is sudoku — but with colors. Instead of numbers 1 through 9, you place 9 hand-picked colors on the grid. Same rules you already know: every row, column, and 3x3 box must contain all 9 colors exactly once. New way to see it. WHY COLORS? Numbers train your logical brain. Colors train your visual brain. After a few puzzles, you stop thinking "what's missing" and start seeing it. It's calmer, faster, and feels nothing like the math homework version. 4 DIFFICULTIES - EASY: gentle introduction, 5 lives, around 40 colors pre-filled - MEDIUM: the daily-coffee level, 4 lives - HARD: for when easy feels like reading, 3 lives - EXPERT: sparse boards that take real concentration, 3 lives Every puzzle has exactly one solution. Generated locally on your device. No internet required. DESIGNED TO RESPECT YOUR TIME - No accounts. No login. No email. - No banner ads cluttering the screen. - Optional rewarded ads: only when YOU tap to restore a life or reveal a hint. - Or unlock Hueku Pro ($3.99 one-time) to remove ads forever. - No notifications begging you to come back. ACCESSIBILITY - Optional 1-9 number labels on top of each color, for color-vision accessibility. - Adaptive light and dark themes: switches automatically with iOS. - Full VoiceOver labels. - Adjustable haptic feedback. - Available in 15 languages. WHAT YOU TRACK - Personal best time per difficulty - Current streak and best streak - Score breakdown after each win - "New Best" celebration when you beat your record All stored locally on your device. Never uploaded anywhere. Hueku is built by a small independent studio. We don't sell your data, because we don't collect it. Download Hueku. Slow down. See in color. ## Key features - Color-based Sudoku gameplay - Four difficulty levels - Offline play - Optional rewarded ads - One-time purchase to remove ads - Accessibility features - Local data storage ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Remove Ads | $3.99 | one-time | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/hueku-color-sudoku-puzzle/id6776482970/reviews.md ### 5/5 — The best minimalist sudoku with colors! *2026-08-02* I like how this is a minimal design to center your focus with colors on the puzzles with the same Sudoku principles. The only suggestion I’d like to make here is to add an ability to see only the highlighted color in the puzzle when a specific color is tapped on the screen. This would help see and focus a lot better for most people. Best app! **Developer response:** Thank you so much for the kind words and the great feedback! We loved your idea, and we just built it — it'll be live as soon as Apple approves our next update. ## Frequently asked questions about Hueku ### Does Hueku have ads? Hueku contains optional rewarded ads that appear only when you choose to restore a life or reveal a hint. You can also purchase Hueku Pro for $3.99 to remove all advertisements permanently. ### How much does Hueku Pro cost? Hueku Pro, which removes all ads permanently, is available as a one-time purchase for $3.99. ### Can I play Hueku offline? Yes, every puzzle in Hueku is generated locally on your device, and no internet connection is required to play. ### What are the difficulty levels in Hueku? Hueku offers four difficulty levels: Easy (5 lives), Medium (4 lives), Hard (3 lives), and Expert (3 lives) for challenging boards. ### Does Hueku collect my personal data? No, Hueku is designed to respect your time and privacy. It does not require accounts, logins, or emails, and all your progress is stored locally on your device. ### What is the age rating for Hueku? Hueku has an age rating of 4+, making it suitable for a wide range of players. ### How often is Hueku updated? The latest version of Hueku is 1.2.1, and it was last updated on August 26, 2026. Updates typically bring improvements and new content. ### Does Hueku support VoiceOver? Yes, Hueku includes full VoiceOver labels to enhance accessibility for visually impaired users. ## Version history (last 4 releases) ### 1.2.1 — 2026-08-26 Housekeeping release: we cleaned up the App Store listing so the app is easier to find. The app itself is unchanged. ### 1.2 — 2026-08-25 Fixed a couple of typos in the Korean version of our App Store listing. Nothing changes inside the game. ### 1.1 — 2026-08-19 Tap any colour in the bottom row to see only that colour on the board — everything else fades back, so you can scan for one colour at a glance. Tap it again to bring the board back. Thanks to the player who suggested this. ### 1.0 — 2026-07-27 No release notes. ## More apps by Hermes Inteligencia Digital Ltda - [NestGuide: Baby Registry List](https://appshunter.io/ios/app/nestguide-baby-registry-list/id6769864474) - [Hush Imposter](https://appshunter.io/ios/app/hush-imposter/id6777459658) - [Water Eject: Dry Speaker](https://appshunter.io/ios/app/water-eject-dry-speaker/id6778054276) - [Lumen - Catholic Daily Prayer](https://appshunter.io/ios/app/lumen-catholic-daily-prayer/id6778149485) - [DMV Permit Test Study 2026](https://appshunter.io/ios/app/dmv-permit-test-study-2026/id6781455190) All apps by Hermes Inteligencia Digital Ltda: https://appshunter.io/developer/1896694873 --- *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.*