There are two prototypes you may view, one is an InVision mockup and the other a coded prototype meant to be viewed on a mobile device.

InVision: https://invis.io/KA3QWWQ2H

Coded Prototype (HTML5, CSS3/SCSS, jQuery Mobile):

Best viewed on a mobile device and saved to the home screen as a web app: http://www.andrianaartdesign.com/gather_app/index.html

video of coded prototype