There are two ways in which the Flock Cover app can be updated on your phone:
Over-the-air (OTA) updates: Any small updates are made available without you having to trek all the way into the App store and redownloading the app. Instead, these updates automatically appear when you next reopen the Flock Cover app. We do this to make your life as easy as possible (eg. so you're always kept up to date with the latest list of drones that we cover)
To force an OTA update on your iPhone: just double tap your home-screen button and swipe up on the Flock Cover app.
If you've got an Android device: click on the bottom right of your screen and swipe to the right.
2. App store updates: This does require you going into the App store and redownloading. However, this is worth your while as you'll be able to get access to all the big updates and shiny new features.