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Most tools check what a stranger sees. Preflight also tries a second signed-in user.

Public pages, as of 22 Oct 2026. Not a guarantee. Sources: shipsniffer.com, cheqvo.com, checkvibe.dev/pricing, checkvibe.dev/security-checks/tenant-isolation, secureindie.com/pricing, secureindie.com/not-checked.
Tool	Second signed-in user, live database	Price
Preflight	Proof Report: two test accounts you create. Webhook and edge-function checks do not run.	Free scan. $29 Proof Report.
ShipSniffer	not stated on their home page	Free check. $12 one-time.
Cheqvo	not stated on their home page	$19 one-time. Monitoring $12/mo.
CheckVibe	Opt-in. Two test actors, on URLs you list. Plan that includes it: not stated on their pricing page.	From $24/mo.
SecureIndie	On their not-checked page. They say it is coming later.	Free check. $49 one-time.