Question for the Developers – SV - Private Photo Vault PRO Review

You have two different apps in the iOS App Store: One is: Private Photo Vault - Pic Safe" (latest version 12.8). The icon is a folder with a key. The other is: "SV - Private Photo Vault PRO" (latest version 13.1). The icon is blue, with a shield and a lock. Why two apps? Is one going to be the official app that is maintained going forward, while the other is not? Which one should customers use or subscribe to?
Review by Wasting My Thyme on SV - Private Photo Vault PRO.