Align to Grid - Use this drawing guide to draw with the grid but not exactly on the grid lines.Snap to Grid - Use this drawing guide to draw exactly on the grid.
Touch “Options” beside Snap and you’ll see the possibilities for Snap While Drawing and Snap While Editing. (Snap While Drawing is available on all platforms and is what we'll use in this tutorial Snap While Editing is iOS only but coming soon to Windows and Android platforms). Play with the options and you’ll get the feel of it quickly.
Snap constrains your line work directly to the grid, while Align lets you draw with the grid's directionality yet not immediately on top of the grid.
