Hitori logic puzzle numbers game

Hitori is a game about numbers. It is a logic puzzle. Game contains thousand puzzles of various sizes and mixed difficulty. Sizes of the puzzles are from 5x5 to 14x14.

In the game of Hitori the goal is to remove repeating numbers from rows and columns with two additional rules:
1) You can't remove adjacent numbers.
2) Remaining number have to form a continuous area. (Imagine you are cutting out the squares with scissors out of a paper puzzle and after you cut out all of them, the puzzle has to be a single piece of paper.)

Single tap removes the number. Second tap will circle the number and it can be used to mark a number that you don't want to remove.