: Offers tools to track unfollowers, blockers, and new fans.

: Some versions reportedly require the user to follow the target account before viewing, which defeats the purpose of an anonymous viewer.

: Allows users to watch Instagram stories without appearing in the viewer list.

Using Postegro involves substantial privacy and security trade-offs: Postegro Tracker for Instagram - App Store - Apple

: Many users report being charged for "Premium" or "Pro" access only to find that private profiles remain hidden.

: Claims to unlock private accounts to view posts and media.