This document summarizes Cocoaheads Meetup 27 and 28. Meetup 27 was hosted by Egger Apps and featured talks on building modern Mac apps with Cocoa Bindings and Storyboards and writing iOS extensions. Meetup 28 was hosted by Runtastic and included talks on their dynamic mocking library Kakapo, migrating to Swift 3, and a recap of Pragma Conf 2016. The next meetup, Cocoahead 29, will be hosted at FH Hagenberg after a holiday break, with meetups continuing in February.