GridPic for iOS photography allows you to take multiple pictures that form a grid, in the easiest way: simply start shooting, and GridPic keeps expanding the grid (in a spiral fashion), allowing any size grids like 2×2, 2×3, 3×3, 3×4 etc, with no limit. This app usually retails for $0.99/£0.69 but today it is free. Click here to download and give it a try today.