EasySudoku

Free, trial version with limited puzzles and options. Nature of game required that it be designed for tablets. The Portrait mode will work with limited support.

Only for 7" screens in Landscape mode.

Not for Mobile Phones in Portrait mode.

Known 'non' issue - The app's Input Numbers overflows in the portrait mode. It is so to encourage playing in the landscape mode.

Only duplicate values in rows and columns are highlighted; duplicate values within a set (the 3x3 boxes) are not highlighted if they are not in the same row or column within the set.

Full features in the non-free version

- Duplicate set, row and column entries alert

- Multiple levels of play including one for kids (an educational feature)

- Multi-screen size support

The non-free version will be released after incorporating suggestions, comments or criticism of this free version. Remember to buy it!