That's a valid concern, especially with stricter API policies now. I did some research before trying anything and ended up using
unfollowers instagram. So far, no red flags on my account and the app has remained consistent. It doesn’t require shady permissions or flood you with ads. It just does what it says—shows you who unfollowed, and when. I used it during a collab campaign and could track if our followers stuck around or not. Safe and straightforward—great if you want clarity without risking your account.