This is Picture Logic Puzzle app. Nonogram, Hanjie, Picross, Griddlers, Crossword, Pic-a-Pix, etc. This puzzle is commonly known as various names.
◇ Features ◇ - All free - Automatically board random generation - Long-term playing - Auto save - Practice mode with 20 levels - Challenge mode with 81 stages - Moving by touch and buttons - Button positions reversed - Zooming game board by pinch-in, pinch-out - Easy playing large game board - Line highlighted, on, off - Support device orientations