Facebook's new feature is “who viewed your profile” because this question "Can you see who view your Facebook? has been raised many times by the users . So, this feature lets you see who visited your FB account in the last 30 days. This feature is available on the iOS app for now. To know who has viewed your profile, you need to open the main drop-down menu (the 3 lines) and then, scroll all the way down to “Privacy Shortcuts". Just below the new “Privacy Checkup” feature, you will see “Who viewed my profile?”