Free Forever
Free
Pricing card lists Free Forever at $0 with five monitored domains and daily checks.
- Domains
- Five monitored domains on the free plan
Otterwatch
● Identity checkedResearch · Vendor site 2026-10-04
Otterwatch monitors SSL certificate expiry and site reachability with daily checks on the free tier and deeper TLS analysis on Pro. The service emails subscribers when certificates approach expiry or when sites go down, emphasizing plain-text alerts and a calm, no-tracker experience.
- Category
- Research
- Free access
- Pricing lists Free Forever at $0 for five monitored domains with daily SSL and reachability checks and no credit card
- API access
- Not confirmed
Is Otterwatch right for you?
A good fit for
Operators and indie developers who want lightweight certificate and uptime monitoring without enterprise NMS complexity.
Before you choose
Free tier caps at five domains with daily checks; Pro adds hourly checks, CT monitoring, and up to 25 domains for $15/month.
Certificate monitoring
Otterwatch watches TLS certificates and reachability, emailing plain-text alerts when sites fail or certificates near expiry.
What it can do
Features & capabilities
Unknown is different from unavailable. Each fact carries its own evidence.
| Capability | Value | Evidence | Checked |
|---|---|---|---|
| SSL snapshots | Free plan includes chain validation, OCSP checks, TLS basics, and certificate-transparency history in each snapshot. | Facts sourced | 2026-10-04 |
| Alert thresholds | Free tier sends expiry alerts at 30, 7, and 1 day plus down/recovered notifications. | Facts sourced | 2026-10-04 |
| Pro depth | Pro adds CT issuance monitoring, cert change diffs, and hourly checks. | Facts sourced | 2026-10-04 |
Understand the total cost
Otterwatch pricing & plans
Pro
$15.00 /mo
Pricing lists Pro at $15 per month with monthly billing via Stripe.
- Domains
- Up to 25 monitored domains on Pro
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Frequently asked questions
Is free really forever?
Otterwatch pricing FAQ states the free plan is not a trial and keeps five domains on daily checks without requiring a card.
What does Pro cost?
The pricing FAQ lists Pro at $15 per month, adding CT issuance monitoring, cert change detection, and hourly checks.
What is Otterwatch used for?
Otterwatch monitors SSL certificate expiry and site reachability with daily checks on the free tier and deeper TLS analysis on Pro. The service emails subscribers when certificates approach expiry or when sites go down, emphasizing plain-text alerts and a calm, no-tracker experience.
Does Otterwatch have a free plan?
Pricing lists Free Forever at $0 for five monitored domains with daily SSL and reachability checks and no credit card. This record lists ongoing free access; check the plan limits before starting.
How much does Otterwatch cost?
The listed monthly price is $15.00 USD at monthly billing. See the plan cards for entitlements, billing commitments and seat minimums.
Can I use Otterwatch through an API?
Not confirmed. API access and subscription access may have different terms; consult the linked sources.
What should I check before choosing it?
Free tier caps at five domains with daily checks; Pro adds hourly checks, CT monitoring, and up to 25 domains for $15/month.
Price history
No retained pricing changes yet. A current price alone does not establish a historical trend.
How this profile is supported
Identity and profile
Reviewed vendor source
Read original source ↗Facts apply to the named version and check date. Send a sourced correction if something changed.