Uptime Robot is the most popular uptime monitoring tool, with millions of users on its free tier. But if you need faster checks, multi-region monitoring, or full control over your data, Warden is worth a serious look. Here’s how they compare.
TL;DR Comparison
| Feature | Warden | Uptime Robot |
|---|---|---|
| Type | Open-source, self-hosted + managed | Managed SaaS |
| Min check interval | 10 seconds | 30 seconds (paid), 5 min (free) |
| Multi-region | Yes (configurable) | Yes (paid only) |
| SSL monitoring | Built-in | Paid add-on |
| Status pages | Built-in | Paid plans |
| Alerting | Slack, email, PagerDuty, webhooks | Slack, email, SMS, webhooks |
| Open source | Yes | No |
| Free tier | Self-hosted (unlimited) | 50 monitors, 5-min intervals |
| Paid pricing | From $49/mo (managed) | From $7/mo |
Check Frequency
This is the biggest differentiator. Uptime Robot’s free tier checks every 5 minutes. That means up to 5 minutes of undetected downtime per incident. Even their paid plans only go down to 30-second intervals.
Warden checks every 10 seconds. For a service with a 99.9% SLA (43 minutes of allowed downtime per month), the difference is significant:
- 5-minute intervals: Each undetected period burns ~11.6% of your monthly error budget
- 30-second intervals: Each undetected period burns ~1.2%
- 10-second intervals: Each undetected period burns ~0.4%
If your downtime costs are high, faster detection translates directly to money saved.
Multi-Region Monitoring
Uptime Robot offers multi-region checks on paid plans, but you can’t configure which regions are used. Warden lets you deploy check agents in any region and configure confirmation rules (e.g., “alert only if 2+ regions report failure”).
Multi-region monitoring matters because:
- A network issue in one region doesn’t mean a global outage
- It eliminates false positives from transient network problems
- It gives you latency data from where your users actually are
SSL Certificate Monitoring
Warden includes SSL monitoring as a core feature, checking certificate validity, expiry dates, and chain completeness on every check. You can set alerts for 7, 14, or 30 days before expiry.
Uptime Robot added SSL monitoring in paid plans, but it’s a separate check type rather than being integrated into every HTTP check.
Expired SSL certificates cause immediate, total outages (browsers show security warnings that block access). This monitoring should be standard, not a paid add-on. Check your current certificates with our SSL checker.
Status Pages
Both tools offer status pages, but with different approaches:
- Warden: Built-in status pages on all tiers. Customizable with your branding, component-level status, and incident history
- Uptime Robot: Status pages available on paid plans. The free tier doesn’t include them
A status page is essential for communicating service health to users and reducing support ticket volume during incidents.
Pricing Comparison
Uptime Robot:
- Free: 50 monitors, 5-min intervals
- Pro: $7/mo for 50 monitors, 30-sec intervals
- Business: $28/mo for advanced features
Warden:
- Self-hosted: Free (open-source, unlimited monitors)
- Managed cloud: From $49/mo (unlimited monitors, 10-sec checks)
Uptime Robot is cheaper for basic monitoring. Warden’s managed plan is more expensive but includes faster checks, multi-region by default, and unlimited monitors. The self-hosted option is completely free.
When to Choose Uptime Robot
- You need basic monitoring for free or very low cost
- 5-minute check intervals are acceptable for your SLA
- You don’t want to manage infrastructure
- You’re monitoring a small number of endpoints
When to Choose Warden
- You need check intervals under 30 seconds
- You want full control over your monitoring infrastructure (self-hosted)
- Multi-region monitoring with configurable confirmation is important
- You need integrated SSL monitoring without paying extra
- You don’t want per-monitor pricing limiting your coverage
- You prefer open-source tools you can audit and extend
Migration
Moving from Uptime Robot to Warden is straightforward. Both tools monitor the same types of endpoints (HTTP, TCP, keyword). Export your monitor list from Uptime Robot and recreate them in Warden. The setup takes minutes per monitor.
Join the Warden waitlist to get early access.
Related tools:
- Uptime Calculator — Calculate downtime for any SLA
- Downtime Cost Calculator — Quantify what outages cost
- SSL Checker — Check your certificate status now