This app was mentioned in 5 comments, with an average of 1.80 upvotes
Sudoku:
Give Sudokyou a try. It's kinda designed for phones with a stylus, but i play it all the time without one. Very unique interface
Take a look at "Sudokyuu : Minimalist Sudoku" https://play.google.com/store/apps/details?id=ca.mnara.sudokyuu
https://play.google.com/store/apps/details?id=ca.mnara.sudokyuu
Try this if you can, it's clean but yes it had ads when paused. It doesn't effect gameplay though.