- Get The Unarchiver (compression utility) here: https://theunarchiver.com/
- Opens iTunes for Mac and download the app from the app store
- Open Finder and navigate to Music/iTunes/iTunes Media/Mobile Applications
- Select the application you downloaded, and drag it into The Unarchiver to extract it
- Navigate into the extracted directory, then into Payload, and you should see an app
- Right-click the app and select "Show Package Contents"
- Find the file "Info.plist", right-click it and select "Quick Look"
- Look through the file for CFBundleURLSchemes (it'll be indented)
- Right below that should be , with each URL scheme inside a tag.
You may see schemes like "fb439523424243535", which are used for facebook auth. We don't recommend using them to link into apps.