Worth noting this only applies to public accounts, anything private still requires approval from the account holder. For public profiles the full story archive is accessible and updates in real time, same as it would inside the app. Been using Insta Story Viewer for a while, search any username and current stories come up within seconds with no login involved. Quality stays the same as viewing natively, no compression or anything like that. Good option whether you left the platform, never joined, or just prefer not to have the app on your phone