Parallel Space Personal app
Parallel Space is amazing application which gives you the neat option to run apps with different accounts. In short any of your apps can be run wit multiple account even if it doesn't support it.
You can create many accounts for social apps like Facebook and Instagram, or games like Clash of the Clans or Game of Thrones. The app create a virtual space and you can run these apps inside.
This way you eliminate the need to have different devices or log out and in on many apps. Run apps in multiple instances very easy with Parallel Space. Another app to do almost the same is App Cloner.
Another great thing is that it doesn't require root privileges. It will work on any android devices and will help you switching between you app's accounts. It is great for social networking and gaming. More information you can read on Parallel Space's website