FollowDiff

About

Privately.

For free.

FollowDiff lets you save snapshots of any public Instagram profile's followers and following lists, then compare them over time to see exactly who followed or unfollowed.

Key Features:
- Snapshot any profile: Enter any public Instagram username to capture their current followers and following lists.
- Compare snapshots: See exactly who followed, unfollowed, or was added/removed between any two snapshots.
- 100% local & private: All data is stored in your browser. Nothing is uploaded to any server. Your tracking activity stays completely private.
- Export & import: Save snapshots as JSON files to back up your data or transfer between devices.
- Track multiple profiles: Monitor as many Instagram accounts as you want.
- Clean dashboard: View all your tracked profiles, snapshots, and changes in one organized interface.

How it works:
You must be logged in for this to work with private accounts you follow
Open FollowDiff and enter a username (or click "Fetch from current tab" while viewing a profile)
The extension saves a snapshot of their followers and following
Come back later, take another snapshot, and compare to see the changes
Privacy first: FollowDiff uses Instagram's public web interface and stores everything locally in your browser. No accounts, no subscriptions, no data collection.