What the follow check tells you
Both directions in one check
A follow on X is one-directional, so the tool tests whether A follows B and whether B follows A at the same time, and tells you when the follow is mutual.
Any public account
You can check any two public profiles, not only accounts you own or are logged into.
No account access
The check reads public follow data, so you never log in to X or authorize access to your X account.
This tool checks the relationship between two accounts. It does not list followers or show how many an account has. To see who follows an account, or who it recently started following, use the Recent Followers checker. To see follower counts and other profile metrics, compare the two profiles side by side.
Who follows who: what each result means
The checker tests both directions in one live check and returns one of four results.
Mutual follow. Both accounts follow each other.
One-way follow. One account follows the other, but the follow is not returned.
Not following. Neither account follows the other.
Cannot verify. One account is private (protected), so X hides its follow list.
How to check a follow manually
Open the profile you want to check, tap Followers, and search the second username in the list. On your own profile, a Follows you badge appears next to accounts that follow you. This is fine for one check but unreliable for large accounts, where X loads only part of the list. For every method in detail, see the guide on how to check if one X account follows another.
Check follows in bulk with the API
This tool checks one pair at a time. To verify follows across hundreds or thousands of accounts, for giveaways, ambassador programs, or audience audits, the check-follow API returns the same true or false for any pair in a single request, on a flat 20 requests per second across every plan, with no approval to get started. New keys include 100 free requests, no card required, and paid plans work out from $1.80 per 1,000 checks.
curl -X POST https://api.sorsa.io/v3/check-follow \
-H "ApiKey: YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"username_1": "TargetAccount", "username_2": "PossibleFollower"}'Returns {"follow": true, "user_protected": false}. follow is true when the second account follows the first. Swap the two usernames to test the other direction.
Common uses
Giveaway and campaign verification. Confirm entrants follow the host account before picking winners. See giveaway verification.
Ambassador and partnership audits. Verify partners still follow the brand account.
Follow-back checks. See whether an account follows you back.
Mutual-connection checks. Confirm whether two accounts follow each other, for example two creators, public figures, or brands.
Frequently Asked Questions
Is this Twitter follow checker free?
Yes. You can run free checks with no X login on any two public accounts. To check whole lists of pairs automatically, use the check-follow API: new keys include 100 free requests, no card required, and each follow check costs one request.
Do I need to log in to X, connect my account, or have a developer account?
No. The checker reads public follow data, so you never log in to X, authorize access to your X account, or apply for an X developer account. Tools that bulk-follow or analyze your own audience need that authorization; this one does not. A Sorsa API key is only needed after the free checks, or for bulk checks through the API.
Can it check a private (protected) account?
No. X hides follow lists for protected accounts, so neither this tool nor any other can verify the follows of a private account.
Does running a check notify the other account?
No. The check reads public follow data and is completely passive, so neither account receives any notification.
How do I check if two accounts follow each other (are mutuals) on X?
Enter both usernames and run the check. A mutual follow means each account follows the other, which is exactly what being mutuals on X means. A one-way follow means only one of them follows, and not following means neither does. The tool tests both directions in a single check, so you never have to search through two follower lists by hand.
How do I check if someone follows me back?
Enter your own account and the other handle. A mutual-follow result means they follow you back; a one-way follow means you follow them but they have not returned it. The check is read-only, so they are never notified.
Can I see when one account started following the other?
No. X does not show when a follow began, so the checker reports the current state only. To see who an account started following most recently, or who followed it most recently, use the Recent Followers checker and switch between Followers and Following.
Can I check many accounts at once, or see everyone a profile follows?
The tool checks one pair at a time. For bulk verification, the check-follow API handles any number of pairs at a flat 20 requests per second. To export a full follower or following list, or to find every account two profiles both follow, pull the lists with the followers and following endpoints in the API Playground and compare them.
Is this a replacement for DoesFollow?
Yes. DoesFollow (doesfollow.com), the classic yup-or-nope checker for who follows who on Twitter, shut down in 2022 and its domain is now up for sale. This checker answers the same question, covers both directions in one check, and never asks you to log in to X.