Noctdoku: Calm Logic
Sudoku without numbers
Only for iPhone
Free
iPhone
Find each creature’s place: one per color, row and column, with no touching. Unwind with endless puzzles, a daily challenge, gentle music and rain.
Noctdoku is a relaxing logic game that gives your mind something satisfying to solve. Find one creature in every colored region while keeping the whole grid in balance.
Use row and column deduction like Sudoku, then rule out impossible squares like Minesweeper—without numbers or mines. Each board needs exactly one creature per color, row and column. Creatures cannot touch, even diagonally.
Tap once to mark an impossible square with an X, drag to mark several, and double-tap to place a creature. A playable tutorial teaches the rules as you go.
• Fresh, generated logic levels to play at your own pace.
• A new 11 × 11 daily challenge and a weekly calendar of completed challenges.
• Switch between the Solar Flame and Lunar Drop whenever you like.
• Soothing music, rain ambience and gentle effects, each with its own control.
• Play offline, with no ads and no in-app purchases.
Take a short break or settle in for a longer session. Every solved grid brings a quiet moment of satisfaction.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, EMILIO CISNEROS, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- EMILIO CISNEROS
- Size
- 80.3 MB
- Category
- Puzzle
- Compatibility
Requires iOS 17 or later.
- iPhone
Requires iOS 17 or later.
- iPhone
- Languages
English and 7 more
- English, French, German, Italian, Japanese, Korean, Portuguese, Spanish
- Age Rating
9+
- 9+
- Infrequent
Horror/Fear Themes
- Copyright
- © 2026 Emilio Cisneros