Datadog vs IsDown Pricing (2026)

Which one is cheaper?

Datadog starts lower at $18/mo, compared to $49/mo for IsDown.

Can I use either one for free?

Datadog has a free plan. IsDown doesn't — though they do offer a free trial.

How do they charge?

Different approach here. Datadog uses usage-based pricing, while IsDown goes with hybrid. That changes the math depending on your team size and usage.

Which one is a better deal?

Depends on what you need. Datadog: At $18-27/host, Datadog sits firmly in the premium tier of observability — more expensive than open-source stacks like Grafana + Prometheus, and pricier than New Relic's per-user model for many team sizes. They're not chasing budget buyers; they're targeting mid-market and enterprise engineering orgs that want a single pane of glass and are willing to pay for it. IsDown: At $49-$179/mo before enterprise, IsDown sits mid-market — pricier than bare-bones uptime checkers but nowhere near what enterprise incident management platforms charge. They're clearly chasing growing teams and agencies who've outgrown a free monitor tool but don't need a full incident command center yet.

Still deciding? See the best Datadog alternatives or the best IsDown alternatives, ranked with verified pricing.