Hosted?
Sentinel Watch · Yes
UptimeRobot · Yes
Sentinel Watch vs UptimeRobot
UptimeRobot is the default hosted uptime brand: a never-expiring Free plan with 50 monitors and 5-minute checks, then paid Solo/Team/Scale plans for 60s–15s intervals, more integrations, and fancier status pages. Sentinel Watch is also hosted, also 5-minute HTTP checks, and also starts at 50 monitors — but there is no paid upgrade path on this product. Choose UptimeRobot if you need SMS, Slack, a mobile app, or sub-minute detection. Choose Sentinel Watch if you want a free status page, SSL expiry emails, and keyword checks without creating a billing relationship.
Sources last reviewed 30 Aug 2026: uptimerobot.com/pricing and uptimerobot.com. Their prices and feature gates change; verify on their site.
| Feature | Sentinel Watch | UptimeRobot |
|---|---|---|
| Hosted? | Yes | Yes |
| Free monitors | 50 (default) | 50 on Free (public pricing, Aug 2026) |
| Free interval | 5 minutes | 5 minutes on Free |
| Faster checks | Not offered | 60s Solo / 30s Team / 15s Scale (paid) |
| SSL expiry alerts | Included | Highlighted on paid plans in their comparison table |
| Status pages | Public /status/[slug] | Basic on Free; custom domain & subscribers on paid |
| Integrations | Email only | 20+ (Slack, SMS, webhooks, …) |
| Mobile app | No | iOS and Android |
| Credit card to start | No | Not required for Free |
UptimeRobot’s public comparison table lists SSL and domain expiration monitors as paid-plan highlights. Their Free plan still includes HTTP, keyword, ping, and port monitors.
Free monitors
Sentinel Watch · 50 (default)
UptimeRobot · 50 on Free (public pricing, Aug 2026)
Free interval
Sentinel Watch · 5 minutes
UptimeRobot · 5 minutes on Free
Faster checks
Sentinel Watch · Not offered
UptimeRobot · 60s Solo / 30s Team / 15s Scale (paid)
SSL expiry alerts
Sentinel Watch · Included
UptimeRobot · Highlighted on paid plans in their comparison table
Status pages
Sentinel Watch · Public /status/[slug]
UptimeRobot · Basic on Free; custom domain & subscribers on paid
Integrations
Sentinel Watch · Email only
UptimeRobot · 20+ (Slack, SMS, webhooks, …)
Mobile app
Sentinel Watch · No
UptimeRobot · iOS and Android
Credit card to start
Sentinel Watch · No
UptimeRobot · Not required for Free
UptimeRobot’s public comparison table lists SSL and domain expiration monitors as paid-plan highlights. Their Free plan still includes HTTP, keyword, ping, and port monitors.
When UptimeRobot is the better tool
You need 60-second or faster checks, notify seats, a native mobile app, heartbeats, DNS/port/UDP types, or status-page subscribers and custom domains. Their knowledge hub and incident tooling are also far ahead of a one-person hosted monitor.
When Sentinel Watch is enough
You have a handful of HTTPS sites, email is an acceptable page, and you want a public status URL without paying for Statuspage. See also our limits and the uptime monitoring guide.
Try the free hosted checker
If 5-minute email alerts are enough, you do not need a UptimeRobot paid plan.
Start free