In this tutorial, we're looking at Instagram's UI and specifically focusing on a pull-to-refresh action along with how the header reacts to the position of the feed. Again, we're using variables, and a different approach to scrolling content in order to synch animations.
The finished Instagram Pull to Refresh prototype is available on Proto.io Spaces. You can import the project into your Proto.io account to see how it's built or use it as a basis for your own project.