Sudoku 401 at App Store analyse

App power index: 590 (based on ranks around App Stores today)
Games Education Board Puzzle
Developer: Crazi Apps
Price: 0 free
Current version: 3.0.8, last update: 5 years ago
First release : 07 Oct 2008
App size: 10.71 Mb
4.2 ( 6112 ratings )
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Estimation application downloads and cost

> 12.98k
Monthly downloads
~ $ 5.31k
Estimation App Cost


If you want to improve your Sudoku skills, Sudoku 401 will help you learn and play.

Sudoku 401 is a Sudoku game, a generator, a solver, and a teacher/tutor.

First, it is a serious Sudoku game.

- Puzzle generator for unlimited play. You will never see the same game twice.
- Clean and simple game board, so you can focus on the playing instead of being distracted by colors and/or shapes.
- Ability to enter the game manually, copy from newspaper, books, or other software.
- Tap on a clue to highlight potential locations for the number. Tap again to go back to normal viewing.
- Automatic or manual pencilmarks, which can be switched during the game play with one tap.
- Automatically saves the game when you leave, ability to continue when you come back.
- Option to use either symmetrically or non-symmetrical Sudoku boards.
- Option to show error.

Even more, it teaches you the logic and techniques of Sudoku, with its multi-step teaching system. All of the techniques are human logic, not computer brutal force.

- Difficulty level is defined by the techniques used, not by number of clues.
- Beginner: Full House, Hidden Single and Naked Single.
- Moderate: Hidden and Naked Pair, Locked Candidates.
- Challenging: Hidden and Naked Triple and Quad, X-Wing.
- Difficult: Swordfish, Jellyfish, XY-Wing and Finned X-Wing.
- Expert: Squirmbag, Finned Swordfish and Jellyfish (that also includes Fishy Cycle, Sashimi Fish and Turbot Fish), XYZ-Wing and WXYZ-Wing.
- Extreme: ALS-XZ (Almost locked set) and Finned Squirmbag.

Check out our screenshots to see how the teaching works.
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Available in countries
Country Price
Canada 20.99 CAD
China 98 CNY
France 16.99 EUR
Germany 16.99 EUR
Italy 16.99 EUR
Netherlands 16.99 EUR
Portugal 16.99 EUR
Spain 16.99 EUR
Poland 10.99 EUR
UK 14.99 GBP
India 999.99 INR
Korea, Republic Of 999.99 KRW
Poland 69.99 PLN
Russia 999.99 RUB
Turkey 99.99 TRY
USA 14.99 USD
Korea, Republic Of 16.49 USD
Ukraine 14.99 USD
Available for devices
iPad2Wifi, iPad23G, iPhone4S, iPadThirdGen, iPadThirdGen4G, iPhone5, iPodTouchFifthGen, iPadFourthGen, iPadFourthGen4G, iPadMini, iPadMini4G, iPhone5c, iPhone5s, iPadAir, iPadAirCellular, iPadMiniRetina, iPadMiniRetinaCellular, iPhone6, iPhone6Plus, iPadAir2, iPadAir2Cellular, iPadMini3, iPadMini3Cellular, iPodTouchSixthGen, iPhone6s, iPhone6sPlus, iPadMini4, iPadMini4Cellular, iPadPro, iPadProCellular, iPadPro97, iPadPro97Cellular, iPhoneSE, iPhone7, iPhone7Plus, iPad611, iPad612, iPad71, iPad72, iPad73, iPad74, iPhone8, iPhone8Plus, iPhoneX,