Pricing
Everything on LegitSonar works without paying and without an account. That is not an introductory offer with a countdown attached — it is what the site is.
€0 for everyone, forever
The whole product. No trial, no card, no account required to use any of it.
— no price, because there is no product
Screening a list rather than a domain: upload, get scores back, keep the run. Described here because people ask for it, not because you can buy it.
— the free tier may be enough
The public API is open and unauthenticated, with a per-address rate limit. If that limit is the thing stopping you, say so and it can be discussed.
The honest part
LegitSonar is an independent project. It carries no advertising, sells no data, and takes no money from the sites it assesses — which matters more here than on most sites, because a trust score that can be bought is not a trust score.
The running costs are a server and a domain name. That is genuinely all, because the expensive part — assessing six hundred thousand domains — was done once, and the reports are served from a single file that fits in memory.
Two things follow from that, and it is fairer to say them here than to let you discover them later. There is no service commitment: the site may be unavailable, and nothing here is warranted. And the live scanner is rate limited per visitor, because each scan makes this server send requests to somebody else's site — which is a cost paid by them, not by us.
If a paid tier ever appears, the free one described above stays. Reports do not move behind a wall retroactively; that would make every link ever shared to this site worthless, which is the opposite of the point.
Questions
No, and there is no mechanism through which it could. Scores are produced by software from technical signals. What a site owner can do — for free — is tell us a signal is wrong, and it will be corrected.
No key, no sign-up, no billing. There is a rate limit per address, documented on the API page, which exists to keep the service standing rather than to sell you past it.