We use Firebase for our backend platform. We’re very happy with them.
Co-founder - Quill
It's very simple to set up--you don't have to worry about maintaining a database--and it also it has a web-based graphical user interface. You can look at your database and manipulate the data right from the browser, which is extremely handy.
Co-founder & COO - Castle
Firebase is an application platform that lets developers build apps fast without the hassle of managing servers. A cloud service, Firebase is especially suited to power real-time, collaborative applications.
Visit the website: https://www.firebase.com/