As a full-time iOS developer, most of my time is dedicated to front-end, dealing with designs and implementing them in an App. Someone designs and developers make it real. It works most of the time. We could say both dev and designer need to speak “UI” in order to interact between each other.
One way to improve communication is to have a designer learn about programming and viceversa. I tried with the classic designer tools: Illustrator and Photoshop. BUT they are way expensive! A free alternative is GIMP and Inkscape. GIMP is ok, but Inkscape it kind of clumsy.
Finally I learned about Sketch. Is a design app focused on UI. It feels intuitive and at the time Sketch 2 was only $49 dollars which is a fair price for all the available functionality. I designed some UI and started pushing how far I could use the app.
I was watching an anime, Last Exile, and decided to do a quick vectorization of a character. It was quite easy and the results were better than expected.
As a result I started making my game art in Sketch. Mammoth Monkey Mole iPad remake is all made with this tool and I am happy with the results.