X (Twitter) Audience Overlap Analyzer - Shared Followers

Compare the follower bases of 2–5 X (Twitter) accounts and find out exactly how much audience they share — shared follower counts, overlap percentages, and full profiles of the people who follow both. No login, no cookies.

What you get

One overlapSummary row per account pair:

• Shared follower count — how many people follow both accounts
• Overlap percentages — what share of account A's audience also follows account B (and vice versa), plus the Jaccard similarity of the two audiences
• True follower totals for each account and how many followers were analyzed
• A partial-analysis flag when large accounts were capped

One sharedFollower row per enriched shared follower (optional):

• Username, display name, blue-verified status, bio, and location
• Follower/following counts, total tweets, account creation date
• Profile picture and direct profile URL

Export everything to JSON, CSV, Excel, or Google Sheets directly from the Apify console.

Use cases

• Influencer vetting — check how much an influencer's audience overlaps yours before paying for a collab; low overlap = more new reach
• Competitor analysis — measure how much audience you share with rivals and who those shared followers are
• Partnership scouting — find accounts whose audiences complement (not duplicate) yours
• Ad targeting research — identify the engaged accounts that follow multiple players in your niche
• M&A / creator due diligence — verify claimed audience uniqueness with real data

How to use

1. Enter 2 to 5 usernames (with or without @) or profile URLs
2. Optionally adjust Max Followers Analyzed per Account (default 25,000 most recent) and Shared Profiles to Enrich (default 50 per pair)
3. Run the actor — every pair of accounts is compared and results appear in the Dataset tab

Output format

Overlap summary row:

{
  "recordType": "overlapSummary",
  "accountA": "nasa",
  "accountB": "spacex",
  "accountAFollowerTotal": 79500000,
  "accountBFollowerTotal": 35800000,
  "accountAFollowersAnalyzed": 25000,
  "accountBFollowersAnalyzed": 25000,
  "sharedFollowerCount": 4180,
  "overlapPctOfA": 16.72,
  "overlapPctOfB": 16.72,
  "jaccardPct": 9.13,
  "analysisIsPartial": true,
  "checkedAt": "2026-07-25T04:12:00.000Z"
}

Shared follower row:

{
  "recordType": "sharedFollower",
  "accountA": "nasa",
  "accountB": "spacex",
  "username": "spacefan",
  "fullName": "Space Fan",
  "isBlueVerified": false,
  "followersCount": 1520,
  "bio": "Rocket launches and astronomy…",
  "profileUrl": "https://x.com/spacefan"
}

FAQ

Do I need X login credentials? No.

How are large accounts handled? By default the 25,000 most recent followers of each account are analyzed — a strong sample of the active audience. Raise the cap (up to 250,000 per account; 0 = maximum) for tighter numbers; the analysisIsPartial flag tells you when a cap was hit.

What does jaccardPct mean? Shared followers divided by the combined unique audience of both accounts — a symmetric 0–100 similarity score.