iStaunch's Facebook Private Profile Viewer is a third-party tool that claims to allow users to view private Facebook profiles without the need for friending or following the profile owner. The tool is designed to bypass Facebook's strict privacy settings, providing users with a way to access private profiles.

: Claims to provide access to photos, friend lists, and posts even if the user has set their profile to "Private" or "Friends Only."

The term "Istaunch" is not a household name like Facebook or Google. Rather, it appears to be a small, transient web development or content blog that appears in search results for social media hacking tools. Over the last 18 months, various URLs with “istaunch” in the domain have published articles claiming to have developed a secret script, a browser extension, or a web-based application that can "view any private Facebook profile."