If there's one tool digital designers love to hate, it's Photoshop. It's ideal for editing photos and creating complex graphics, but not so much for designing user interfaces. Sketch is a Mac app specifically designed for building UIs, icons, CSS-friendly web elements, and much more.

Today, Sketch updated to version 3, bringing all sorts of new features with it such as "Symbols", which are reusable objects comprised of multiple layers. You can use them multiple times throughout a single design, and a change made to one automatically syncs to the rest.

Other new features include:

• Text Styles and Layer Styles, redesigned and unified for a better experience
• Redesigned inspector, giving you quicker access to everything
• Automatic Slices, export layers directly, without needing to set up manual slices
• Export multiple resolutions from a single slice, at any scale
• Improved PDF, EPS and SVG importing and exporting
• Speed, bug fixes and polish all around
• Presentation Mode, go full screen and hide all controls, perfect for showing off designs
• Improved bitmap editing with Magic Wand, Crop, Invert and Vectorize tools

Designs can be previewed live on your iOS device(s) with Sketch Mirror, a $5 companion app that operates via WiFi. For a limited time, Sketch can be purchased from the Mac App Store for $50. (The normal price is $80.)