Martus.app presents itself as a login-based service, but the signals surrounding it raise real questions for anyone considering handing over their email and password. For a site of this kind — a SaaS platform that controls access to some kind of account — you'd normally expect clear ownership, an easy way to contact support, and at least a modest digital footprint. Martus.app has none of those.
The domain's ownership is effectively invisible because WHOIS lookups fail, and the site's .app TLD often hides registrant details behind privacy services. The business does publish a legal entity disclosure and an about page, which is more than some fly-by-night sites bother with. But there's no contact email, phone number, or live chat anywhere on the login page. If something goes wrong with your account, you'd have no obvious way to reach anyone.
Perhaps most telling is the complete absence of any web history. The Wayback Machine has zero snapshots. There are no Trustpilot reviews, no social media profiles listed, and no ranking in site-traffic lists. Martus.app may be brand new — and new doesn't automatically mean scam — but for a service asking you to create an account, the lack of any track record demands extra caution.
So is martus.app a scam? The evidence doesn't prove that, but it also doesn't give you any reason to trust it. If you're considering signing up, start with a throwaway email and a strong unique password. Watch for any requests for payment or sensitive data before you've validated who's behind the operation. And until the company makes its ownership and contact information clear, treat it as an unknown risk.