All in one app is the only app in play store of this kind. This is made to simplify the complexity of thousands of thousands of apps. To access all, one needs to download all of them. But by using this app, just by one click, one can access all the stuffs like Facebook, Whatsapp in PC, Twitter and all of them without even downloading a single bit. The most interesting thing is that this app contains its own social media i.e. you can post anything and it can be seen by all the people who downloaded this app just like Facebook.