A while ago I discovered a dedicated UI design tool you've most definitely heard about called Sketch. It has two key advantages over Photoshop that made me switch in the blink of an eye.
Starting on a new User Interface design project can be daunting. You just received a hundred pages worth of specifications which may include: project, creative design and build briefs; draft wireframes and app flows ideas; deliver abilities requirements; examples of existing products; and brand guidelines that you have to navigate around.
So where do you start?