Add links to an app

You can do that by adding a web element as shown in our User Guide:
http://help.interactbuilder.com/m/16264/l/164206-browser-element

You may want to add the word 'link' to that article, since I did not find it in the user guide search.  Is there any way to make a word in a text element the link?

That's a good idea, I'll add that to the article. Thanks!

To make it so that a certain word within a text element can link, you can add a new graphic element and, without assigning an image to it, place it in front of the word that should link. Then you can add the Tap-Browse action set to this transparent graphic element.