Stunning one pager showcasing a gorgeous free iOS design kit courtesy of the cool dudes over at InVision, called 'TETHR'. The long one pager features an excellent video header demonstrating the layers of the kit, a massive filterable (by element category) preview of each of the 138 elements (our screenshot is shortened) and the cherry on top is an interactive version of all the elements within an iPhone. What an excellent presentation of a free download.
The last UI kit you'll ever need - We're talking $80 worth of templates. Totally free. We won't even make you share it. (But it'd be cool if you did.)