Sentinel vs UptimeRobot A Better Alternative for Agencies
UptimeRobot is trusted by millions of users and offers a generous free tier, though it's now limited to non-commercial use. Sentinel takes a different approach: simple flat pricing with no add-on fees, agency-focused workflows, and automated client reports. Here's an honest look at how they compare.
Feature-by-Feature Breakdown
How Sentinel compares to UptimeRobot
| Feature | Sentinel | UptimeRobot |
|---|---|---|
| Pricing Model | Flat monthly fee, everything included | Base fee + SMS credit packs + per-seat add-ons |
| Check Interval | 30s Business / 1 min Starter & Pro / 5 min Free | 30s Enterprise / 1 min Solo & Team / 5 min Free |
| Free Tier | 10 monitors, 5-min checks, commercial use OK | 50 monitors, 5-min, non-commercial only |
| SSL Monitoring | Included on all plans | Included on all plans |
| DNS & Domain Monitoring | DNS records + domain expiry (Starter+) | Domain & SSL expiry |
| Keyword Monitoring | Pro+ ($29/mo), up to 10 per monitor | All plans, 1 per monitor |
| Ping & TCP Port | Paid plans (Starter+) | Included |
| Heartbeat & Cron | Paid plans (Starter+) | Included |
| Performance Audits | Lighthouse audits (Pro+, Beta) | Not available |
| SMS Alerts | Included on Pro+ ($29/mo) | Credit packs sold separately ($3-$100) |
| Status Pages | 5 on Starter, 10 on Pro, unlimited on Business | 1 basic (Free), 3 (Solo), 100+ (Team+) |
| Client Uptime Reports | Automated PDF reports on Business ($59/mo) | Monthly email summaries on paid plans |
| Incident Management | Built-in with notes and timeline | Built-in with root cause details |
| Integrations | Email, SMS, Slack, Discord, Teams, Webhooks | 20+ integrations including PagerDuty, Zapier |
| Team Seats | Included on Pro+ (5 members), no per-seat fee | Included on Team+ (3), extras $15-19/mo each |
| Desktop App | macOS menu bar app on Starter+ | Mobile app (iOS + Android) |
Why Agencies Switch
More than just uptime checks
Simple, Predictable Pricing
UptimeRobot's pricing looks simple until you need SMS alerts (sold as credit packs starting at $3), extra login seats ($15-19/mo each), or notify-only seats (another add-on). With Sentinel, you pick a plan and everything is included: SMS, team seats, status pages, webhooks. One bill, no surprises, no calculator needed.
Built for Client Work
UptimeRobot is a great general-purpose tool, but it wasn't designed for agencies managing client portfolios. Sentinel's Pro plan ($29/mo) includes tags to organize by client, a team of 5 with no per-seat fees, 10 branded status pages, and keyword monitoring with up to 10 keywords per endpoint. It's the workflow agencies actually need.
Automated Client Reports
This is where Sentinel is genuinely unique. On the Business plan ($59/mo), you can generate automated, scheduled uptime reports with PDF export, designed to send directly to clients. Pair that with branded status pages on custom domains, and you have a complete client transparency toolkit. UptimeRobot doesn't offer anything comparable.
FAQ
Sentinel vs UptimeRobot questions
Can I use UptimeRobot's free plan to monitor client sites?
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What does Sentinel include that UptimeRobot charges extra for?
Can I try Sentinel alongside UptimeRobot?
Start monitoring with Sentinel
If you're an agency that wants simple pricing, no per-seat fees, and monitoring tools designed for client work, give Sentinel a try. 10 monitors free forever, no credit card required.