Comparisons
Saved searches
Save a query over a profile's followers or following, and on future snapshots see how many matching accounts were gained or lost.
On the Followers or Following page, type a search and click Save search. The query is stored against the current browser (same anonymous cookie as tracking) and appears on the `/tracking` dashboard under Saved searches.
Between the profile's two most recent snapshots, the dashboard shows which matching accounts joined the list and which left. This is a filtered view of the same comparison reconstruction described above, not a separate mechanism, so the same coverage rule applies: below 99.5% coverage on either side, the dashboard says the comparison is unavailable rather than showing a number.