Cirdoku: Circular Sudoku
Daily Logic & Color Puzzles
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Six ways to play one puzzle: Classic, Daily Challenge, Hue, Journey, Dial and Endless. Sudoku logic, bent into a circle.
Cirdoku is Sudoku, reimagined on a circular grid.
Instead of a square board, you work with concentric rings divided into radial sectors. Place the numbers so that no digit repeats within any ring or any sector. The logic is the same. The shape changes everything.
HOW IT WORKS
• Classic boards use 4 concentric rings x 8 sectors, 32 cells to fill
• Each ring must contain all its numbers, with no repeats
• Each sector must contain all its numbers, with no repeats
• Find the one arrangement that satisfies every constraint at once
SIX WAYS TO PLAY
• Classic: the pure circular Sudoku puzzle
• Daily Challenge: a new themed board every day, with its own twist and difficulty
• Hue: the same puzzle with no numbers at all, solved entirely by color
• Dial: drag whole rings to spin them and match par, scored by turns and medals
• Journey: work through a progressing series of boards
• Endless Mode: keep playing, with a new puzzle every time you solve one
FEATURES
• Fixed boards on every campaign level, so every player meets the same puzzle
• Built-in Hint system: get unstuck without breaking immersion
• Notes, mistake tracking and restart on any board
• Fractal Zoom win animation: a satisfying reward for completing a puzzle
• Clean, distraction-free interface with smooth circular interactions
WHY CIRDOKU?
The circular format isn't just a gimmick. It fundamentally changes how you scan for conflicts and build chains of deduction. Patterns that were automatic in square Sudoku need to be relearned. It's a fresh challenge even for experienced puzzlers.
PLAY WITHOUT PRESSURE
Every puzzle mode is playable without a subscription. Every board comes with three hints. Cirdoku Plus is a single one-time purchase that makes hints unlimited, with restore support on your store account.
If you've mastered square Sudoku and want something that feels genuinely new, Cirdoku is your next step.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The board now shows you the scan. Select a wedge and its ring, sector and block light up, and every copy of its number gets an outline. The deduction stays yours: dimming the keys a cell cannot take is now an option in Settings, off unless you want it.
Also in this update:
• Undo, on the toolbar and with Ctrl or Cmd + Z
• Placing a number clears it from the notes around it
• Credits are gone: every board comes with three hints
• Journey levels return you to the map when solved, and Restart replays the same level
• The solve clock pauses while the app is in the background
• The first run explains blocks, and cage boards explain their sums the first time you meet one
• Mistakes are gentle: no more shaking board, just a line saying which ring, wedge or block already holds that number, and Undo right there
• The Cirdoku wheel greets you while the app opens
• One sound per move, and your music keeps playing
The developer, Gustavo cesar Sola Barreto Marcelino, 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
- Gustavo cesar Sola Barreto Marcelino
- Size
- 23.3 MB
- Category
- Puzzle
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 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
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Cirdoku Plus $2.99
- Copyright
- © 2026 MedHub. All rights reserved.