Picross - Nonograms

Nonograms, also known as Hanjie, Griddlers, Picross, Japanese Crosswords, Japanese Puzzles, Pic-a-Pix, "Paint by numbers" and other names, are picture logic puzzles in which cells in a grid must be colored or left blank according to numbers at the side of the grid to reveal a hidden picture.
The numbers are a form of discrete tomography that measures how many unbroken lines of filled-in squares there are in any given row or column. For example, a clue of "4 8 3" would mean there are sets of four, eight, and three filled squares, in that order, with at least one blank square between successive groups.
Features:
- Currently have over 100+ pixel images (no more than 64x64 pixels).
- Designed for Android and iOS
- Zoom and pan the image
- Hold click and move (horizont or vertical) fill cells
- Autosave your work to continue later
- Easy to add new image and reskin
- Code is clean and professional.