PaintCode allows you to take vector assets and convert them to native Swift or Objective-C code. Its probably saved me hours by eliminating the need to wrangle with creating multiple image assets for all the iOS different screen sizes. PaintCode 2.3 adds over 15 new features including thing like copy and paste support right from Sketch and Illustrator, and animated sequence export for creating animations for Apple Watch! If you're an iOS developer and haven't checked out PaintCode, stop what you're doing, and check out PaintCode. It's really great.