Hueku: Color Sudoku Puzzle
Relaxing Brain & Logic Games
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
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.
Housekeeping release: we cleaned up the App Store listing so the app is easier to find. The app itself is unchanged.
The developer, Hermes Inteligencia Digital Ltda, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Hermes Inteligencia Digital Ltda
- Size
- 7.1 MB
- Category
- Puzzle
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 14 more
- English, Arabic, Dutch, French, German, Hindi, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Turkish
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Remove Ads $3.99
- Copyright
- © 2026 Hermes Digital