Name the change
Move beyond a falling count and see which visible accounts disappeared between scans.
For the question: who unfollowed me?
An unfollower is not just someone who does not follow you. It is someone present in an earlier follower list and missing from a later one.
What a comparison looks like
Watchlist profile
@alex.casefileNew followers
+31Unfollowers
-7Net change
+24Recent changes
New follows
Unfollowed
The direct answer
You need two dated follower-list records. SeeWho saves the first visible list as a baseline and compares it with a later scan. Accounts present before and absent later can be reported as unfollowers, subject to username changes, account deletion, and Instagram visibility.
Useful signals
Move beyond a falling count and see which visible accounts disappeared between scans.
Distinguish an actual unfollower from an account that simply never followed you back.
Keep dated comparisons so one small fluctuation does not have to become a guess or an argument.
Scan to scan
Scan the follower list while it is visible. The first result records who is present at that moment.
Scan again after enough time has passed for a comparison to be useful, rather than repeatedly refreshing.
SeeWho reports accounts missing from the later list. Check context before deciding what the change means.
Honest limits
If there is no earlier scan, there is no evidence that a current non-follower used to follow you.
An account may unfollow, change its username, become unavailable, or be omitted because the visible list could not be fully read.
SeeWho reports list changes. It cannot tell you why someone left or whether the change was personal.
Before you install
No. The first scan creates the starting record. Unfollowers can be identified only after a later scan provides a second record.
No. An unfollower appeared in an earlier follower list and later disappeared. A non-follower may never have followed you.
SeeWho compares the lists visible in your own session. It does not send a message or follow request to the account being checked.
Learn the method
Start with a baseline
Install SeeWho, scan a list you can view, and let the next scan supply the evidence.