Whispar
Private means one pair, not a saved diary
Nobody else is in the thread. That is the privacy Whispar actually offers. It is not an encrypted notebook you can reopen next week.
The link has a code. A badge stays on the visitor's device if they start a chat. We don't store who invited whom.
Who can see the messages
The two people in the chat, for as long as the messages are being delivered. They are not posted to a profile, a blog, or a public card unless you deliberately use a separate share feature outside this random chat.
Who cannot pull them up later
You cannot. There is no history page for random chats. When the queue has delivered a message, it is removed. If you needed a record, this is the wrong tool.
Hints are opt-in
A country or interest hint is sent only if you check the box. The site does not guess a country from your network. Leave the box off and the other person does not get that hint.
Questions
Is the chat end-to-end encrypted?
No. Treat it as a private thread on a server that delivers messages and then drops them, not as a sealed vault.
Can a moderator read a live chat?
The product does not offer a public gallery of chats. Reports are the path for abuse, and a report includes the reason you choose.