What's New

- Added support for 4-inch displays
- Fixed a bug in the game timer
- Unified code base across Sudoku Uno for Mac, iPad and iPhone

App Description

Sudoku Uno is an elegant implementation of the popular Sudoku game

Sudoku Uno provides an almost infinite number of Sudoku games at 3 levels of difficulty.

Playing Sudoku Uno is not just fun. It helps build your Sudoku solving skills.
Indeed Sudoku Uno can help you out with hints and provide the reasoning behind the hint.

Sudoku Uno adapts to the way you like to play:
- You may use green pencil notes to keep track of candidate values
- Or use red pencil notes to keep track of values you ruled out
- You may have Sudoku Uno help you with automatic pencil notes (*)
- Sudoku Uno can be set to block erroneous entries

(*) You are cheating only a little. The real thinking still needs to be done.
It is just more fun with automatic pencil notes. The boring bits are taken care of


Sudoku Uno was first release in July 2008 as ACTSudoku.
With the new name came the addition of high scores. Scores are comparable across iPhone, iPad and Mac versions.
iPad users may also want to check out the dual player "Sudoku Duo"


Features:

- Millions of Sudoku boards with rotational symmetry
- Solvable by logic only. No guessing. No backtracking!
- Three levels of difficulty: easy, medium, hard
- Intelligent & educational hints. Explanations help improve your skills
- Green & red pencil notes. Aka. positive & negative markers
- Optional automatic pencil notes. Can be switched on and off during game play
- Optional blocking of erroneous entries
- Possibility to start over
- Games are automatically suspended when you receive a phone call
- Save favorite games
- High scores


Technologies:

- Sudoku solving engine based on "human logic"
- Advanced Sudoku board generator to provide an unlimited number of Sudoku games
- Difficulty levels are determined by techniques to master, not by number of givens
- The Sudoku engine can explain the reasoning behind the hints given during game play


Reviews:

- AppCraver.com: Friendliest Sudoku App Yet
- AppStoreApps.com: ACTSudoku is the best Sudoku game for the iPhone and iPod Touch
- 148apps.com: HIGHLY RECOMMENDED
- iPhoneAppReviews.net: ACTSudoku is definitely superior for its hints and marker system
- Boredzo.org: I declare ACTSudoku the winner of the iPhone sudoku race

iPhone Screenshots

(click to enlarge)

Sudoku Uno: Unlimited Sudoku screenshot 1 Sudoku Uno: Unlimited Sudoku screenshot 2 Sudoku Uno: Unlimited Sudoku screenshot 3

App Changes

  • June 23, 2011 New version 2.0.3
  • May 25, 2011 New version 2.0.3
  • March 21, 2011 Price increase: FREE! -> $1.99
  • March 19, 2011 Price decrease: $1.99 -> FREE!
  • March 07, 2011 New version 2.0.2
  • March 02, 2011 New version 2.0.1
  • February 23, 2011 New version 2.0
  • October 25, 2010 Price increase: $0.99 -> $1.99
  • September 26, 2010 Price decrease: $1.99 -> $0.99
  • September 25, 2010 Price increase: FREE! -> $1.99
  • September 23, 2010 Price decrease: $1.99 -> FREE!
  • August 29, 2010 Price increase: FREE! -> $1.99
  • August 28, 2010 Price decrease: $1.99 -> FREE!
  • August 23, 2010 Price increase: FREE! -> $1.99
  • August 22, 2010 Price decrease: $1.99 -> FREE!
  • April 01, 2010 Price increase: FREE! -> $1.99
  • March 31, 2010 Price decrease: $1.99 -> FREE!
  • March 15, 2010 Price increase: FREE! -> $1.99
  • March 12, 2010 Price decrease: $1.99 -> FREE!
  • September 30, 2009 New version 1.7.1
  • September 06, 2009 Price increase: FREE! -> $1.99
  • September 03, 2009 Price decrease: $1.99 -> FREE!
  • August 26, 2009 New version 1.7
  • May 28, 2009 Price increase: FREE! -> $1.99
  • May 26, 2009 Price decrease: $0.99 -> FREE!
  • March 19, 2009 Price increase: FREE! -> $0.99
  • March 16, 2009 Price decrease: $1.99 -> FREE!
  • January 01, 2009 Price increase: FREE! -> $1.99
  • December 31, 2008 Price decrease: $1.99 -> FREE!
  • December 15, 2008 Price increase: FREE! -> $1.99
  • December 14, 2008 Price decrease: $1.99 -> FREE!
  • November 13, 2008 Price increase: FREE! -> $1.99
  • November 05, 2008 Price decrease: $1.99 -> FREE!
  • November 01, 2008 New version 1.5.4
  • October 31, 2008 Price decrease: $2.99 -> $1.99
  • October 20, 2008 New version 1.5.2
  • October 16, 2008 Price increase: $0.99 -> $2.99
  • October 14, 2008 Price increase: FREE! -> $0.99
  • October 11, 2008 New version 1.5.1
  • October 09, 2008 Price decrease: $2.99 -> FREE!
  • September 24, 2008 New version 1.5
  • September 18, 2008 Price increase: $0.99 -> $2.99
  • September 10, 2008 Price decrease: $2.99 -> $0.99
  • April 03, 2013 Price decrease: $1.99 -> $0.99
  • July 15, 2013 New version 2.1.1
  • July 15, 2013 Price decrease: $0.99 -> FREE!
  • January 12, 2016 Price increase: FREE! -> $0.99
  • January 20, 2016 Price decrease: $0.99 -> FREE!

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