Several fine games packed in one app – Logi5Puzz+ 3x3 to 16x16 Sudoku Review

My sons have been playing 5x5 sudoku. Now they can challenge themselves with 6x6 and higher. I can play 9x9 sudoku with the same app and also try 10x10 and 12x12. Both pencil mark and hint features are helpful for big sizes. Today I teach my 4-year old nephew the puzzles by starting with 3x3 then 4x4. One app serves multiple purposes.
Review by Princeton Ph.D. on Logi5Puzz+ 3x3 to 16x16 Sudoku.