igtrackr is a free Instagram analytics and follower-tracking tool that works on any public account with no login, app install, or card required. Enter a handle to see followers, recent follows, unfollows, engagement, and top posts, then track changes over time with daily and weekly delta updates on a saved dashboard. It includes a Profile Analyzer, Follower Viewer, Engagement Rate Calculator, Hashtag Analyzer, and CSV/JSON export. Pro and Agency plans add more tracked profiles, longer history, alerts, and API access for creators, brands, and agencies.
