iPhone Screenshots


If you like Sudoku you will love iSudoku, the only Sudoku for the iPhone that offers four different Sudoku types including Sudoku Plus with two overlapping puzzles and Samurai Sudoku that consists of five overlapping Sudokus. Furthermore, you can manually enter your favorite puzzle via the newspaper mode. iSudoku has a nice and clean user interface for a unique experience on the iPhone. Play the traditional Sudoku, Sudoku X, Sudoku Plus, Samurai Sudoku or enter your own puzzle. Five difficulty levels span from very easy Sudokus for beginners to very difficult ones for the experienced users.

The Samurai Sudoku consists of five overlapping puzzles and Sudoku Plus offers two overlapping puzzles that span beyond the screen size. To show the other parts of the puzzle you can scroll and zoom the puzzle ass needed. If you tap the hint button to get some help the screen automatically scrolls to the field, which is animated to show the hint.

To make life easier, you can select some options like highlighting the row and the column of a chosen field or you can use the immediate number checking to show wrong numbers in red.

Once you get stuck, the sophisticated hint system can help. The hint system employes well known strategies to rate the difficulty level of field's solution. If you request a hint the hint system always shows the hint with the lowest difficulty level first. Furthermore, you can also request to show the corresponding number of a field.

The hint system can generate pencil marks for you that automatically change depending on the numbers you enter. You can choose from four different reduction levels for the pencil marks. The hint system can only create the pencil marks with all possible numbers of a field or it can reduce the pencil marks by applying reduction methods, a human player normally employes to find the next number. But be careful, the highest reduction level will solve most of your puzzles.

iSudoku offers long lasting fun, because all puzzles are generated on demand. iSudoku supports three languages: english, german, and french. I would like to thank Pierre-Yves Bessuand for the french translation.

-enter your own puzzle in the newspaper mode
-play Samurai Sudoku, Sudoku Plus, Sudoku X, or traditional Sudoku
-five difficulty levels
-unlimited amount of Sudokus generated on demand
-automatic pencil marks that change corresponding to the users input
-sophisticated hint system for all kind of players
-highlighting of rows and columns
-immediate number check shows wrong numbers in red
-puzzles can be restarted
-integrated user manual and a quick start guide
-clean and intuitive user interface for a great user experience
-unintrusiv user interface (no overlays for numbers and pencil marks)
-all on one screen for optimal overview
-beautiful animations
-progress is automatically saved on exit

What’s New

Version 3.0.1

This app has been updated by Apple to use the latest Apple signing certificate.

Improvements and fixes

Ratings and Reviews

4.0 out of 5
2 Ratings

2 Ratings

Mr. Shorts ,

Nearly perfect

I really enjoy the streamlined view of this program as well as the different forms of sudoku puzzles. The application works flawlessly, looks great, and has simple controls. The only thing that iSudoku is missing is a timer option or some other means of scorekeeping. Over all, excellent program!

Josigata ,

Put it back the way it was

I've played this daily for years now, but the latest update has made it sluggish, the menu letters are harder to read, the numbers are tiny even though there's plenty of real estate left on the screen. My fingers keep hitting the wrong numbers, and I have small hands.

lanulos ,

Love the newspaper mode!

I looked through dozens of sudoku apps until I found this one which lets you enter a puzzle by hand from the newspaper. I thought Sudoku Grab might, but it only lets you capture from a photo, which is not much use on an iPod Touch. I also like that it has Samurai Sudoku, but I wish it had Newspaper Mode for that! (Yes, I am crazy enough to enter all those numbers by hand! I hate getting 75% through a Samurai in the paper, and then find I have made an error somewhere. I would love to have a way to find the errors and fix them, so I could continue.)

App Privacy

The developer, Heiko Hambrock, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

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

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