4 stars: The game interface is easy and very beautiful. I spend a lot of time solving it. I would like to point out a flaw in the software that when a notification of whatsapp or any application comes, the duration yet taken automatically resets to zero and due to which the exact time taken to solve the puzzle is not known. Please find a solution.
3 stars: Meh. Another Sudoku game. Average at best. I'm not sure what the difference is between ultimate at 9x9 and classic mode but oddly the controls differ. It would also have been nice to see a subscript indicating how many of each number has been placed in the puzzle.
3 stars: Game breaking bug, 'fill in notes' basically tells you where each number should go by refreshing it every turn. Numbers which only have a single note means that's the correct number for the box. Was fun until I discovered this cheat. Thanks
5 stars: The app does everything it should and does it well. The only thing that was a bit confusing at first was selecting input methods. The menu isn't very intuitive and it's difficult to expect what kind of input behavior you'll get. Now that I know which one I like, though, it's not a problem. If I had to ask for one feature, it'd be for a better dark mode where it's mostly black with other colors that are easy on the eyes at night.
5 stars: Good and simple ui. Lot of puzzles to play. Better app compared with others. Good to improve your thinking skills. Good support from the developers. Great game...