If you want to know who unfollowed you on Instagram, the safest method is analyzing your official export ZIP with a no-login browser tool.
Why this method is more reliable
Data export analysis uses your own account snapshot directly from Instagram. It avoids credential sharing and gives cleaner relationship segmentation.
Results that answer the unfollower question
- Accounts that do not follow you back
- Accounts you do not follow back
- Mutual relationships for context
- CSV download for manual verification
How often to run this check
For active creators, a weekly or monthly export review is enough to monitor meaningful follower changes without overreacting to daily fluctuation.