Draw perfect circles, rectangles, and straight lines. The "Linework" layer type also allows for vector-based adjustments after drawing.
However, the search for a free crack is a dangerous waste of time. You will encounter fake downloads, malware, and broken files. For the price of a few cups of coffee (or a single anime figure), you can buy the official license and immediately download both versions from the developer’s site. Paint Tool SAI 2 dan 1.2.5 Full Version
In 1.2.5, Leo would have to manually draw grid lines on a separate layer and erase them later. In SAI 2, he simply clicked the perspective ruler tool, dragged out the vanishing points, and snapped his lineart to them. What usually took him two hours of tedious measuring took him ten minutes. Draw perfect circles, rectangles, and straight lines