After months without touch anything related with design (my life has been a hurricane :( ) I heard again about Sketch app, by Bohemian Coding, and how awesome it is for UI design for mobile and web. In a move against my use of Adobe pirate software, I gave it a try.
And man, the app is awesome! You can be very productive with it, even if you're not a designer. Everything is simple and vectorial, so you can see fast and great results with it. I made this flag in about 15 minutes.
Words cannot describe, if you use OS X and are tired of PS/Illustrator, I recommend you to try Sketch. :)
Link: http://bohemiancoding.com/sketch/