Make the most of your Surface Pen and Slim Pen with these awesome apps

Leonardo is still in its beta stage. But it has a full set of tools for amateurs and pros alike, including infinite canvas, tons of brushes, grids and perspective lines, and a user interface that’s easy to navigate. Whether you’re sketching, drawing, or painting, this app will accommodate your needs. While it remains in beta, the price is knocked down to $40, 50% off the full price, at least for now.