On this site, you will find some works that I put hands on.
The main language that I use on everyday basis is Objective - C. Also, I gradually acquainted with Swift and use Pixelmator as graphics editor.
P.S. Never let a computer know you're in a hurry.
Objective - C: 4 Years
Swift: 6 months + occasional projects
Xamarin (C#): 3 Years, iOS + Android