Safe communication with public app

How safe is it to use a public app to let people just fill in a form with personal data? There’s no need for a session or logging in. The idea is that it’s just one way. Storage, never showing.

Also I’m wondering which data is potentially readable by retool, even if it’s stored on an external storage/db for example.

And what about end to end encryption and retool? Are there are features like this or upcoming?

I’m curious if retool could be used to receive medical information via this way and what concerns there are.

The security section of the documentation has a lot of detail in this area that you may find useful