SignalWatch
API-first monitor for public-URL text changes, downtime, and TLS expiry.
- Hashes visible text; CSS selector, ignore regex, and min-change to cut noise
- Alerts for text changes, downtime, recovery, and TLS expiry (14 days, then 3)
- Free: 3 monitors / 15 min, 45-day history, no card; OpenAPI at /docs
Best for: Builders watching pricing pages, status pages, changelogs, and policy pages.
Free Pro $12/mo · Business $29/mo