Vectoraster for Mac is a

raster to vector converter

. This means it takes images made up of pixels (raster images, like JPEGs, PNGs, etc.) and converts them into images made up of mathematical descriptions of lines and curves (vector images, like SVGs, EPSs, etc.).

The benefit of converting raster to vector is that vector images can be scaled to any size without losing quality, unlike raster images which become pixelated when enlarged. Vectoraster likely aims to automate this process, making it easier and faster than doing it manually in vector graphics software like Adobe Illustrator or Inkscape.