Looking for a specific type of social networking app

Hi everyone,
I am looking for a social networking app for iOS that has the following traits.
• Free.
• Is accessible with VO.
• allows for you to either share your screen and have VO be heard, or somehow allows VO audio to be shared.
I know these are very specific requirements, but I've looked everywhere for this type of app and am wondering if any one on this site knows if such a thing exists.
Thank you for your help.
Amanda