SSL Clock

Cheaper than one hour of downtime.

Every plan gets every alert. You only pay for more sites.

Plans

Free

$0

3 monitors, 1 seat. All alert types. Email, Slack, Teams, signed webhooks and PagerDuty. Domain expiry and Certificate Transparency watch. REST API.

Start free

Starter

$9/mo

Or $90/year billed annually, two months free.

25 monitors, 3 seats. Everything in Free. For a small business or a handful of client sites.

Start Starter

Pro

$29/mo

Or $290/year billed annually, two months free.

150 monitors, 10 seats, hourly checks. Everything in Starter. For agencies, SaaS teams and MSPs.

Start Pro

Cancel any time. No contracts. No setup fees.

What every plan includes

Pro works out at about $0.19 per certificate. Compare price per certificate with other SSL monitoring tools.

  • Expiry reminders at 30/14/7/3/1 days (adjustable)
  • Instant alerts for expired, hostname mismatch, broken chain, unreachable
  • Plain-English fix instructions on every alert
  • Email, Slack and Microsoft Teams
  • No agents, no private keys

Check a site with the free SSL checker or see pricing. Read the 47-day certificate timeline and Let's Encrypt expiry emails.

FAQ

What counts as a monitor?

One hostname. www.example.com and api.example.com are two.

Can I switch plans?

Yes, up or down, any time.

What happens if I cancel?

You keep access until the end of the period you paid for. No questions.

Need more than 150?

Email us and we'll sort it out.

Do you offer a trial?

The free plan is the trial. It doesn't expire.