While the idea of a tool is tempting for the curious, these services are almost universally ineffective and often dangerous. Instagram’s privacy wall is robust, and the only real key to the door is a direct follow request. Stay safe, respect others' privacy, and avoid third-party "hack" tools that promise the impossible.
Parents of teenagers often search for these tools to monitor their children’s online activity. While the intent is often protective (ensuring no bullying or inappropriate behavior), using a third-party viewer like Privategramview is rarely the legal or safe route. privategramview