Sudoku: Roundoku
Experience a totally new way to play Sudoku.
Don't stop on walls and corners.
Let your mind play around.
Roundoku is the really challenging Sudoku!
Is this to hard for You?

iCloud Synchronisation:
- Don't loose your level progress on new devices!
- Your levels are updated on all of Your devices!
- Your level packs are updated on all of Your devices!

Scan Roundoku Game Codes (RGC) in Books and Magazines:
- Find RGCs in Books and Magazines to play this levels in this app instantly!
- Just scan them with this app!

- Press hard on an input field to see all the connected fields!
- Press even harder to hide the number pad for full visibility!

Shortcuts on home screen
- Resume your last played level.
- Play the Tutorial.

Main Features:
- Totally new round Board
- Play Roundoku Levels from Magazines and Books
- Sensational new Input Method:
- Just drag to select a number
- don't ever search for the input numbers
- clean and easy user interface
- beautiful animations
- distraction free mode
- Tutorial
- 5 levels of difficulties
- Daily Levels (as an In-App Purchase)
- Game Center Leader Boards
- Game Center Achievements
- share your levels with friends
- Facebook, twitter, mail, iMessage
- deep links to the app
- round Notes System
- auto save
- auto clear notes
- auto error checking
- hold your device, how you want
- for righties and lefties
- all positions every 45 degree
- rotate board to get a new view to the level
- enlarge board on iPhones to see more

Special Features for this Black Version!

- ads
- 50 levels
- black theme
- black leaderboards

to buy:
- 150 more levels
- silver and gold themes
- silver and gold leaderboards
- daily levels and leaderboard
- more to come

Get the black roundoku now!

Thank You for Your support!
menzel apps

What's New

Version 3.1.0

Major update

- Take possession of the gorgeous new iPhone X Screen.
- Comply with iOS 11.
- A couple of litte improvements

Help me to improve Roundoku - The Better Sudoku with a 5 star rating!

Tell me about bugs and feature requests:

Follow Roundoku on Instagram
Follow Roundoku on Twitter
Follow Roundoku on

Thank you!
Menzel Apps

Ratings and Reviews

One issue


I like this game a lot; it's an interesting twist to sudoku. The design is nice and I really like that you can rotate the board. My only issue is that I have to tap a field several times to toggle multiple hints. You should be able to select a field once and toggle the hints on or off as much as you want.

Nice spin to a classic game


The user interface is very sleek. The introductory tutorial is really helpful and necessary to understand the rules. It is a nice brain game that puts a nice spin on a classic game. If you like sudoku, you'll love this version.

It's a brain game very challenge


If you like sudoku is fine, maybe you can get a lot options in App Store, but if you are looking for a brain game with more challenge the simple sudoku, this game is a great option.


Lars Menzel
24.5 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, German
Age Rating
Rated 4+
© Lars F. Menzel
In-App Purchases
  1. Get all Features forever $5.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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