Head-to-head
UptimeRobot vs Paessler PRTG
Short answer: pick UptimeRobot if: You only need HTTP/ping uptime checks and want the cheapest paid tier. Pick Paessler PRTG if: You are monitoring internal network and server infrastructure, not just public websites. Pick Lemwatch if you want uptime, page changes, SEO, security and speed checked in one tool — free for 10 sites, then $19/mo.
Pricing, check intervals and category fit — verified against each vendor's public pricing page.
Side-by-side snapshot
| Metric | UptimeRobot | Paessler PRTG |
|---|---|---|
| Entry paid tier | $7/mo · Solo | $200/mo · PRTG 500 |
| Free tier | yes | yes |
| Min check interval | 60s | 60s |
| Category | uptime | uptime |
Verified facts: Lemwatch vs UptimeRobot
Sourced from UptimeRobot's public pricing and docs.
Entry paid
$7/mo
Solo
Free tier
Yes
Min check interval
1 min
Last verified
2026-06-28
UptimeRobot strengths
- Generous free tier (50 monitors at 5-minute checks)
- Simple, focused uptime UX
- Long track record and large community
Where it falls short
- No SEO, sitemap, or content-drift monitoring
- No visual change detection or screenshot diffs
- Status pages are basic on lower tiers
Choose UptimeRobot when
You only need HTTP/ping uptime checks and want the cheapest paid tier.
Lemwatch advantage
Lemwatch bundles uptime, SEO, SSL/DNS, visual diffs and a public API in a single tier instead of forcing an upgrade for each capability.
Verified facts: Lemwatch vs Paessler PRTG
Sourced from Paessler PRTG's public pricing and docs.
Entry paid
$200/mo
PRTG 500
Free tier
Yes
Min check interval
1 min
Last verified
2026-09-10
Paessler PRTG strengths
- Free forever for the first 100 sensors
- Monitors network devices, servers, traffic and cloud alongside websites
- Automatic network discovery creates sensors for you
Where it falls short
- Sensor-based licensing gets expensive as coverage grows
- Traditionally installed on your own Windows server
- Website-specific checks (SEO, sitemap, visual diffs) are not the product's focus
Choose Paessler PRTG when
You are monitoring internal network and server infrastructure, not just public websites.
Lemwatch advantage
Lemwatch is hosted, set up in minutes and built for public websites rather than internal networks.
Where Lemwatch fits
Both UptimeRobot and Paessler PRTG focus on uptime. Lemwatch bundles uptime, SEO indexation, Core Web Vitals, security headers and visual diffs — free for 10 sites, no credit card, then $19/mo.