Owldoku: Logic Puzzles
614 levels, one long climb
Free · Designed for iPad. Not verified for macOS.
Not a guessing game. All 614 boards are hand-checked to have exactly one answer. Stuck? The hint explains why, not which square — so every solve makes you sharper.
A logic puzzle you solve by reasoning, never by guessing.
Every board is a grid split into coloured regions. Place one owl in each colour, one in each row, one in each column — and no two owls may touch, not even diagonally. That is the whole rule set. What grows is not the rules but what you can deduce from them.
614 LEVELS, IN ORDER
The levels run as one path from a 5×5 you will solve in a minute to 10×10 boards that ask for real technique. Each is checked to have exactly one answer, so a board is always solvable by reasoning alone.
HINTS THAT TEACH
Stuck boards are where a puzzle game loses people. Tap the hint and Owldoku dims the board to the squares the argument is about, outlines the row, column or colour under discussion, and says in one sentence why the move follows. Eight techniques, each introduced by a board built to need it. The hint shows its reasoning; you can close it and find the move yourself.
BUILT TO BE READ
• Colour-blind mode draws the region borders as outlines, not hues
• Two themes, light and dark
• Tap for a cross, double-tap for an owl, drag to rule out a run of squares
• Correct owls lock in place, so a solved part of the board stays solved
• Your progress saves itself, mid-board included
PLAYS OFFLINE
No account, no sign-in, no network needed to play. Optionally, you can send anonymous notes on where you got stuck, which is what we use to tune the difficulty curve — the game is identical whether you do or not, and you can change your mind in Settings at any time.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The game now follows your device language — Korean, Japanese, Chinese and nine more were in the app all along but never showed. You can also pick a language yourself in Settings. Fixed: the sound and music volume sliders would not move.
The developer, HNH CO. LTD., 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:
- Location
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- HNH CO. LTD.
- Size
- 36.6 MB
- Category
- Puzzle
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - iPad
Requires iPadOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 11 more
- English, French, German, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese, Vietnamese
- Age Rating
4+
- 4+
- Copyright
- © 2026 H&H Games