Pro adds visitor save-and-resume, encrypted incomplete applications, retained draft attachments and private links. Free retains administrator draft recovery, ordinary multistep forms, completed-submission private uploads, simple estimates and print summaries, inbox, CSV and queued email.

No grandfathering or parallel legacy edition. Existing source history and stored data are preserved. Install Free first, then matching Pro. Deactivation does not delete data or change licensing/expiry.
