My iPhone has had the Cryptomator App installed. It hasn’t had a vault added. (It is possible that I had a Vault added, but i deleted those from the Cloud. Cannot remember.) I tried to add a vault but got as far as authorizing a cloud drive. Nothing more.
Surprisingly, in the Files App under Recent, I see a bunch of Cryptomator Vault files including a master key file. All the other files on that list are a few documents, nothing from another Apps. The timestamps are today when I was playing with Cryptomator. I cannot get any information on the files or the enclosing folder from “Files.”
Oddly, after installing the latest iOS 16.2 update, the files disappeared.
What are these files and why do they appear in the Files app?
I haven’t analyzed the exact behavior of the Recents tab but I assume that it shows “recently accessed” and maybe even “recently created/modified” files. E.g., if you create a vault in iCloud Drive, Cryptomator creates certain files that represent an encrypted vault. This includes a “masterkey.cryptomator” file amongst others. But you don’t have to worry about them, see:
I haven’t paid much attention to the Recents tab either. It is a bit of a mystery what goes there. I see only a few files that may have downloaded into the Downloads folder (and synced with iCloud) over the past few months.
I never created a vault in iCloud. I’ll keep an eye on that tab as I add vaults and use the app more.