How do Fathom and Offset compare in monthly traffic?

Fathom has 5,620,385 monthly visits, while Offset has 57. Traffic estimates describe audience size, not product quality.

How do their growth rates compare?

Fathom has a month-over-month growth rate of +0.2%; Offset has -89.5%.

How does pricing compare?

Fathom: Freemium, Free Trial. Freemium with a free-forever tier for individuals, plus paid Premium and Team plans billed per user. Enterprise options add SSO, SCIM and admin controls. Offset: Contact for Pricing. No public price list. The site offers no self-serve pricing page, so commercial terms are arranged directly with the vendor; legacy placement was Free Trial / Paid / Contact for Pricing. Expect seat- or enterprise-based contracts, especially for on-premise or audit-heavy deployments.