From the file Instagram already gives you. No login, no password, nothing uploaded. The list is built in your browser, free, and the same report shows who is paying to reach you.
Open Instagram, then Settings, Accounts Center, "Your information and permissions," then "Download your data." Choose JSON, set the date range to All time, and make sure Followers and following is included. Photos and videos can stay out. Instagram tells you when the file is ready, often within a day.
The export is read inside your own browser tab. It is never uploaded, and we never ask for your password or connect to your account.
The report compares the two lists in your export: who you follow and who follows you. You get the accounts that do not follow you back, the ones that follow you without a follow back, and how many follow each other, with a search box and a link to every profile.
Instagram's export does not always carry your full follower list. On some exports it holds only the people who followed you in the last few weeks, even when you asked for all of your history, and an export requested for a date range holds only that range. Subtract that from everyone you follow and thousands of real followers look like they left. Opt2In checks the list before comparing it, against your Insights when you have them and against the dates in the file when you do not, and refuses to show a list it cannot stand behind. It tells you what it found and that a fresh export often carries the full list.
Your following list keeps accounts that changed their username or were deactivated after you followed them. They can appear as not following back. Every name on the list links to the profile, so you can check in one tap.
An unfollower app that logs into your account can see everything you can, and it sits on the wrong side of Instagram's rules. Reading your own export breaks nothing and asks for nothing.
Your export lists the ads you were shown over the past week and every company that uploaded your details to target you. The report names them and puts a number on what your attention was worth.
The interests and ad topics Instagram assigned to you, in its own words, plus the apps and websites that reported your activity back to Meta.
Free, and nothing leaves your device. The report runs in your browser. If you choose to save it to an account, only the counts are stored, never the names on this list.