As with similar software, Sketch does have a learning curve. Sketch is incredibly easy to use once you're comfortable with the navigation, know the keyboard shortcuts, etc. Before you're at that point, however, it can be difficult. I already had experience with programs like Illustrator, Photoshop, and InVision
, and took to Sketch very quickly. But one of my colleagues who has less experience with these types of tools is unable to use Sketch efficiently, even after several months.