Sketchapp
Integrated UX development tool
Screenshots
Hunter's comment
Sketch has been built by designers, for designers. Working tightly with OSX, it has the same familiar styling as the operating system itself.
It's packed with features such as code export (very handy) and prototyping (also very handy). It also shares the design language with Xcode. In my experience, these three features made it very easy to learn.
There are many useful extensions and plugins built by the community developers.
The company offers price plans for students and Universities, which makes it more accessible.
Sketch has first movers advantage over InVision Studio and is already being used in many companies, pushing the advantage even further.
If you are a designer or would like to become one, Sketch is definitely a great app to learn.
Link
https://www.sketchapp.com/?ref=steemhunt
Contributors
Hunter: 
This is posted on Steemhunt - A place where you can dig products and earn STEEM.
View on Steemhunt.com