The key to resolution-independent user interface
Use built-in vector shapes (rectangles, rounded rectangles, ovals, texts, beziers, stars and polygons) to draw stunning buttons, sliders, icons and other user interface elements. PaintCode makes sure that your drawings stay crisp and sharp by aligning them to pixel grid at just the right places. You can even add multi step gradients and shadows to make your interfaces more realistic.
via paintcodeapp.com