I will talk about the parallel space. Basically, this app tries to clone the app which already installed in your mobile. You can any kind of apps with this parallel space. It is useful when you have multi accounts on a single device. But there is a huge drawback of this app. It consumes the battery in about 2 hours. It does run in the background and makes the mobile also very slow. Because of this, I would not like to recommend this app to people, although if people want to have multi accounts in a single device, then you can use it.