ERGauge is a free web-based service for exploring public Instagram profiles without signing in or installing an app. It brings stories, posts and pinned highlights together in a full-screen viewer, with navigation designed to feel familiar. The service says views are not tied to a user’s Instagram account and do not appear in story audiences or view counts.

Alongside the viewer, ERGauge provides profile analytics calculated from publicly visible data, including engagement rate, average likes, posting frequency, comment activity and per-post performance. Users can browse a ranking of popular profiles, compare two accounts, or use an engagement-rate calculator. The platform also offers downloads of public stories and posts in original quality, with photos saved as JPG files and videos as MP4 files.

Its interface is available in English, German, French, Italian and Russian, and it uses a dark theme by default. ERGauge requires no account and presents its viewer, analytics and download features as free, with no paid tiers