We are looking for a community component for our Joomla site.
We looked at the demo of Jom Social on our iPhone6 Pluses and the site is not really screen responsive, in that the text is too small to read, and unlike Facebook which shows up with larger text and images so you don't have to zoom in. You may want to replicate the experience I am referencing.
Your demo page shows the various screen types, however, it did not display in the manner that most screen responsive sites and components do when on an iPhone6.
The current version of Jomsocial has just transitioned from its original form into a product that became responsive over time. Jomsocial 3.3 will be mobile first approach. This we be released in the next few months and will make a big difference using the product on a mobile
My target market for this community primarily uses their mobile devices for online access, so please feel free to send me an email when the screen responsive version of Jom Social is available.