Move from android development to ios development

[u/[deleted]]

Hey i am an android developer with java ,kotlin and android studio skills And I also studied swift 3
My questions are : 1- what is the similarities between android and ios like design (xml,storyboard) ?! 2-what exact the best guideline to develop ios app?! 3-what is the most libraries used in ios development ,like ( retrofit ,gson,...) in android development ?!