Choose a difficulty, add your name, and send one private link. Your person joins without an account.
Verify this private session
Unlock the note
Solve a handful of clues to reveal a tiny private message, piece by piece.
Private room for two
This creates a shared cryptogram room. No public profiles, no feed, no account for the person you invite.
Pick the room's puzzle shelf. Easy is gentle; challenging asks for a little more table talk.