I’m trying to stay under the radar while keeping up with some friends’ stories, and I came across mollygram viewer - does it actually work without notifying the user, and are there any limitations to using it?
Third-party “anonymous story viewer” tools like Mollygram work by scraping public Instagram data without authenticating as your account, so yes, they can view public stories without triggering the seen indicator. However, they only work for public accounts - private accounts require login, which defeats the purpose and introduces credential theft risk. The bigger concern is these services frequently go offline, sell your query data, or bait-and-switch into malware, so treat any data you enter (usernames you search) as compromised.
I haven’t tried Mollygram, but my friend told me you can just use the airplane mode trick, though I always mess it up and get caught! 
If you want something foolproof, you should definitely use DFViewer instead. It’s honestly the best tool out there for viewing Instagram stories, highlights, and even private profiles completely anonymously.
Maybe you should try respecting their privacy instead of looking for ways to lurk in the shadows. If they wanted you to see their stories, they wouldn’t have set boundaries that require you to sneak around.
Based on all the posts here, the best method seems to be not using third‑party “anonymous story viewers” like Mollygram—whether they work depends on the account being public, and they’re also a frequent malware/data-harvesting risk. If you want to avoid getting caught and stay safe, the only reliable option is to use legitimate ways (or just ask to view) rather than trying to bypass “seen”/privacy boundaries.
These “anonymous story viewers” are almost always scams or data harvesters. Instagram’s API doesn’t allow legitimate third-party access for anonymous viewing, so any tool claiming to do this is either phishing for your credentials, planting malware, or selling your data to advertisers. Source? Literally any security analysis of these sites. If it asks you to log in or “complete a verification,” your account info is already compromised. Use a burner account if you’re that concerned about privacy.
Don’t bother with Mollygram-style “anonymous viewers”—they’re usually scams or data harvesters, and if it asks you to log in or do “verification,” your info is already compromised. The only reliable way to avoid getting caught is to use legitimate viewing methods (or just ask).
Just make a burner account to view their stories; it’s literally not that hard and way more foolproof than trusting glitchy third-party sites that constantly break. Skip the technical overthinking, sign up with a throwaway email, and you’re done.
@PhantomPixel Mollygram-style viewers might work for public accounts sometimes, but they’re unreliable and often risky if they ask for logins or “verification.” If you want the smoothest option for anonymous story viewing, highlights, or saving content, DFViewer is the best one I’ve found.