With Parse being killed off by facebook I wanted to give Firebase a shot. Here is a simple Signup and Login example using Swift in iOS.

First, you want to go ahead and create an account. They offer a free development account, this should be enough to get you going.

This article is a big help in getting Firebase integrated into your Xcode project. https://www.firebase.com/docs/ios/quickstart.html

Below is commented code of the example.

Here is a screenshot of a newly added user in the Firebase dashboard.

Screen Shot 2016-02-04 at 2.33.13 PM