Why the app doesn’t start on my iPhone and the cursor spinning forever?
There are two possible reasons for that:
Possible reason 1: Your phone might be running out of memory therefore the installation cannot be completed.
Solution: Free some space in your phone memory by deleting unnecessary applications, photos, videos etc. Then uninstall and reinstall the Reverd app following the steps below. It is important to delete the reverd contact because sometimes when the old installation copy is still there it interferes with the new installation so it is recommended to start clean.