Pricing
Priced by technologies watched, not records returned. Records are bounded by how much change actually happens; the number of competitors you sell against is not.
Starter begins at three technologies. Depending on the technology, one yields roughly 20–220 qualified US mid-market accounts a month — too thin to run a pipeline on.
free
Free for evaluation · 1 technologies watched
One technology, 50 companies, 10 named contacts. Enough to see the data and check it against your own accounts.
starter
Starter for solo reps · 3 technologies watched
Reverse lookup, firmographics, dated changes, CSV export, one webhook. Contact counts included.
$249 /mo
Secure checkout by Stripe · cancel anytime
Most popular
growth
Growth for outbound teams · 8 technologies watched
Everything in Starter, plus named contacts with verified business emails, unlimited webhooks, email verification and version-level detail.
$549 /mo
Secure checkout by Stripe · cancel anytime
scale
Scale for sales orgs · 20 technologies watched
Everything in Growth, plus team seats and priority support.
$1,200 /mo
Secure checkout by Stripe · cancel anytime
30-day money-back guarantee, no questions asked.Payments are processed by Stripe — we never see your card number. Signing in takes you to Stripe's hosted checkout; nothing is charged before that page. Monthly plans cancel at the end of the period with no lock-in.
What you get at each tier
| Free | Starter | Growth | Scale |
|---|
| Technologies watched | 1 | 3 | 8 | 20 |
| Companies per technology | 50 | Unlimited | Unlimited | Unlimited |
| Named contacts | 10 | Counts only | Unlimited | Unlimited |
| Verified business emails | — | — | Yes | Yes |
| Reverse lookup | Yes | Yes | Yes | Yes |
| Firmographics | Yes | Yes | Yes | Yes |
| Dated changes | Yes | Yes | Yes | Yes |
| CSV export | Yes | Yes | Yes | Yes |
| Webhooks | — | 1 | Unlimited | Unlimited |
| Email verification | — | — | Yes | Yes |
| Version-level detail | — | — | Yes | Yes |
| Team seats | — | — | — | Yes |
| Priority support | — | — | — | Yes |
What $249 buys, in contextBuiltWith Pro starts at $295/mo with per-record limits, and Wappalyzer's entry plan is $250/mo per seat with per-technology targets on top. Ansafi's $249/mo Starter includes every company running your watched technologies, with no per-record cap and no per-seat charge. One closed mid-market deal covers a year of it.
Questions buyers actually ask
How much of the market do you cover?
Between 46% and 65% of BuiltWith's top-1M counts, and coverage thins out above the mid-market. We publish the whole distribution on the coverage page rather than a single flattering number, so you can check your segment before you pay.
How fresh is the data?
The crawl runs monthly and we publish four to six weeks after the month it covers. A change alert reaches you the month it happens, not the day. If you need same-day signals, this is the wrong tool.
Do you include phone numbers?
Rarely — phone coverage is 3.9%, so we do not sell it as a phone column. What we do have is named contacts with verified business emails on 77.7% of US mid-market companies, and we verify addresses you already hold.
Can I cancel anytime?
Yes. Monthly plans cancel at the end of the billing period with no lock-in and no cancellation fee. Annual plans are billed once a year and covered by the 30-day money-back guarantee.
Do I need a credit card to try it?
No. Domain lookup is free without an account at all, and the free tier gives you one technology, 50 companies and 10 named contacts without a card.
Who is behind Ansafi?
Tyler Horan, who built it and runs it. The about page has the name, the reasoning and a way to reach him.
What happens when I click subscribe?
You sign in, then Stripe's hosted checkout opens for card details. Nothing is charged before that page. Stripe handles the payment; we never see your card number.
A technology suspended after failing re-audit stops counting against your quota immediately and is credited on the next invoice. It stays in your set, inactive, and resumes automatically if a later re-audit clears it.