Open up Safari and load follow.church
At the bottom of the screen you'll see an icon depicting an arrow that looks like it's trying to get away from a square. Tap this button.
Once tapped you will have a few options. Scroll to the right until you see the "Add to Home Screen" option. Select this one.
You'll be asked to choose a name for the homescreen icon. So, you know, pick a good one and save it. When you're done it'll show up on your homescreen and you'll have Follow Church right there on your home screen.
**Please note, you will need to return to the homepage (follow.church) before completing this process in order to ensure that the mobile app loads to the home screen every time.