Sudoku by Logify1.42 - App Store

Play Classic Sudoku the most intuitive way: write in the numbers with your finger. Feels just like playing on paper, only better; number highlighting and other features will help you locate patterns without giving away the solution easily.

The game offers unlimited Sudokus in four difficulty levels from easy to expert. Each puzzle can be solved with logical reasoning; no guessing required. If you are new to Sudoku or want to try the next level up, use hints to learn new strategies. The advanced hint system will explain the logic behind each pattern and how to find it on your own. You will see that most of these strategies are not that difficult, even though it may be hard to find them on the board.

Summary of features:

. Number entry by drawing, no number pad
. Use your finger as eraser (left-right-left)
. Double tap to add/clear notes
. Number highlighting, including notes
. Completed numbers gray out (optional)
. Switch between levels anytime, last game saved for each level
. Unlimited puzzles, all solvable, no guessing required
. Advanced hint system designed to teach new strategies
. Auto notes (for hard and expert level)
. Auto complete button (optional)
. Daily Challenges
. Undo/Redo
. Statistics, top 10 times (tap on timer)
. Game Center leaderboard and achievements
. Font, board design, and backdrop options

Enjoy!

Version History Performance improvements, plus adjustments for iPhone 12 Pro Max. 1.42 12/07/2020 Fixed toolbar button text alignment on iOS 13. 1.40 11/22/2019 Fixes for the upcoming iOS release. 1.39 09/16/2019 If you have the "Auto clear notes" option turned off in Settings, double-tapping on a cell will now present all candidates for you to manually remove the invalid ones. 1.38 07/03/2019 Fixed an app crash on older devices. 1.37 05/26/2019 No more banner ads!
Also improved puzzles for medium level and up. 1.36 05/20/2019 Fixed an issue where the Sudoku board became unresponsive when replaying after a win. 1.35 05/03/2019 UI improvements. 1.34 02/14/2019 Added redo button. It will pop out after undo. Handy when touching undo by accident. 1.32 01/21/2019 Fixed an issue where Easy level Sudoku wouldn't let you draw the numbers. 1.31 01/13/2019 Fixed a rare issue where no hints would show at expert level. Also improved some of the animations for undo and hints. 1.30 01/07/2019 Added haptic feedback when a number entry is accepted (correct or not) and when a conflicting entry is made. This is available on newer iPhones that support this feature. 1.29 12/19/2018 Keeping up with the latest from Apple. This update also contains bug fixes, UI enhancements and performance improvements. 1.28 09/27/2018 Fixed an issue where notes could not be removed when auto clear notes was turned off. 1.27 08/27/2018 Improved handwriting detection. 1.26 07/29/2018 Subtle changes to help make the given numbers stand out a little. Also fixed a bug where the app would declare victory even if there were errors, when the "allow conflicts" setting is enabled. 1.25 07/03/2018 Improvements to the recognition of erase gesture, also better detection of accidental touches and when the finger lifts up briefly while writing. 1.23 06/23/2018 Fine-tuning accuracy, optimizations for memory and battery use. 1.22 06/11/2018 Performance improvements, bug fixes, better detection of clearing cells. 1.21 05/30/2018 More accurate handwriting detection. 1.20 05/21/2018 Improvements to the handwriting detection. 1.19 05/09/2018 Bug fixes. 1.18 05/03/2018 - Added Undo until solvable. Here is how it works: when a hint shows a error in the position, you can use this new button to go back to before the first error was made. As often the case, one error leads to another and by the time you notice it, it's easier to go back to a good state rather than trying to fix the position.
- It is now allowed to write over a number to replace it (except for the given numbers of course). The app is not going to warn you though if you accidentally change an already solved cell so look out for that.
- The ink color is now a little lighter to help make the given numbers stand out.

Thank you for playing the Logify's version of Sudoku and if you agree that this is the best and most fun to play Sudoku app out there, please take a moment and rate it. You can also write us at support@logifyllc.com - any feedback is most appreciated and helps us make the app better. 1.17 05/01/2018 Fixed a minor ad-related issue. 1.15 04/24/2018 Fixes for drawing multiple numbers quickly, also fixed an occasional app crash. 1.14 04/23/2018