I uploaded the free version myself last night just to preview, and the free version is not very customizable. (At least not to the standard I have come to expect from Premium MTS themes). Which is fine, it's free.
I really hate to point this out because I've used MTS themes frequently over the last few years and overall I've been very happy, but the placement of the features on SociallyViral is misleading. (I'm referring specifically to this page: https://mythemeshop.com/themes/sociallyviral-free/) The Pro features are listed between the free version description and demo and the free version features. And since the same color scheme is used for both, it is easy to miss that those features don't actually apply to the product on the page.
Again, I'm not complaining about the theme. I appreciate the wide selection of free themes available. I will likely end up purchasing the pro version of SociallyViral, but I do want to point out that the upsell for a premium theme with the same name, logo, and color scheme in the middle of a page for the free version is extremely confusing.