Harpo appears to refer to a few different things, but the most likely “app” is harpo.app , which is a service for sending secret messages through one- time unique links, useful for sharing sensitive info like passwords.

Possible meanings

  • harpo.app : Secret-message sharing via one-time links.
  • Harpo Legal : A tool for creating, signing, sharing, and managing NDAs.
  • Harpo as a company name: There are also unrelated Harpo-branded apps and products listed elsewhere.

Most likely answer

If you saw “harpo f01” in a forum or product listing, it most likely points to harpo.app , the secret-link messaging app.

Quick note

The exact meaning of “f01” is not clear from the available information, so that part may be a typo, an internal code, or a model/version tag rather than part of the app name.