Can Glideapps persist the state for public users when in "public sign-in" mode?

I don’t think you can do things like comments or favorites anonymously. They are tied to an email address, so they require the user to sign in to use those functions. Even on a public app. As for forms or images, there is nothing stopping you from allowing a user to submit those things anonymously, unless you are using Per User Data to view them and Email special values saved to the sheet. Then the user would still need to sign in I think. What you want would require some sort of device ID special value, which isn’t available at this time.

Some of this came up as a suggestion in the following thread: