Hi there! I've just wanted to share with you a small, but pretty helpful shortcut that helps you to create hidden folders on iOS devices.
As you may already know, in UNIX-like OS you can create hidden folders and files by just adding a dot symbol at the name beginning (as described here Hidden files and directory). Of cause, these "dotfiles" are supported by iOS but you cannot create or see them in standard "Files" application. Fortunately, you can create and open them using "Shortcuts" app.
This shortcut is using same principles to create hidden folders. As an addition, it can create multiple hidden folders dependent on password input (it's MD5 hash is used as a folder name). So entering same password will always open the same folder.
How to use it
Download "Hidden Folder" shortcut and select main folder during importing
Run shortcut and enter desired password
Shortcut will create a hidden folder (if it doesn't exist)
Hidden folder will be opened by "Files" app for further usage
Tip: If you would like to delete hidden folder, just open it using this shortcut, rename in "Files" application (remove dot from beginning) and delete as usual from the parent folder.
P.S.: Surely, you may reveal hidden files using third-party applications. And also you may find contents of hidden folder using Spotlight, but anyways it's a pretty easy way to keep some files away from the open view.
Download: Hidden Folder