Clean — by Similarity API

Compare two listsin seconds

Paste or drop two lists — usernames, emails, IDs, anything. Instagram exports work as-is, .html or .json, no cleanup. See what's only in A, only in B, and in both.

or drop the .html export straight from Instagram — .txt, .csv, .json work too
or drop the .html export straight from Instagram — .txt, .csv, .json work too

Free for combined totals up to 500 rows. Larger jobs are a flat $0.99 — you preview the full match counts before paying.

Built for real-world list checks

  • Followers vs following. Drop your Instagram or TikTok export files and find who doesn't follow you back — or who you don't follow back.
  • Email list overlap. Compare two exports before sending — find shared addresses and net-new leads.
  • Allowlist / membership checks. Compare an updated list against yesterday's snapshot to spot additions and removals.
  • Any two lists of identifiers. Usernames, order IDs, SKUs, domains — one value per line is all you need.

We auto-handle common exports

Drop the file straight from the platform — no cleanup needed. We detect the shape and extract the handles automatically.

Instagram
followers_1.json · following.json · followers_1.html · following.html
TikTok
user_data.json · user_data_tiktok.json
Plus
Plain .txt, single-column .csv, JSON arrays of strings or objects.

Simple Pricing

Free for small lists. Flat $0.99 for everything else.

Combined totals up to 500 rows are free. Larger lists are a flat $0.99 per run.

Free

$0

Up to 500 rows combined

  • Full result counts and preview
  • Instagram & TikTok exports supported
  • No signup required

Larger lists

$0.99 flat

Any combined total above 500 rows

  • Preview all match counts before paying
  • Download every bucket as CSV
  • One-time payment — no subscription

Frequently asked questions