Where Is My Puss?

Somewhere on the grid, the cats are hiding - and the numbers know where.
Each row and column tells you how many of its squares hold a cat. A few come filled in as clues. The rest is pure logic: cats run 1-4 squares in a straight line, and never touch, not even at a corner.
Tap to clear a square, double-tap to place a cat, drag to sweep a row. Boards grow from 4x4 to 8x8, then keep coming forever. Three lives, earned hints, no timers.
A quiet puzzle for nonogram and sudoku lovers.