Mark a text to be shown in different languages by indicating them as NSLocalizedString
Create a new "strings" file, named it "Localizable", and then hit the localize button in the inspector
in terminal, navigate to the root of the Xcode project folder, and then type genstrings -o en.lproj Views/*.swift Model/*.swift
to generate the localized string pair in the Localizable.strings file
Add another language to localize
(optional) export the localization file to 3rd party
Run your app using another language