SitesRadar vs UptimeRobot for Client Sites
An honest comparison of SitesRadar and UptimeRobot for freelancers and agencies: uptime pings versus full site health, pricing, and when to use each.
UptimeRobot is the tool most freelancers reach for first, and for good reason: it is mature, reliable, and its free tier is famously generous. SitesRadar exists because uptime is only one of the ways a client site quietly breaks. This comparison lays out what each tool actually checks, what each costs for a client roster, and — honestly — when UptimeRobot is the better choice.
The short version
UptimeRobot answers one question very well: is the site responding? SitesRadar answers a broader one: is the site healthy? A site can return HTTP 200 all day while a migration left forty broken links, the SSL certificate is a week from expiring, the domain registration lapses next month, or the contact form’s email domain just landed on a blacklist. None of those page you if all you monitor is uptime.
What each tool checks
| Check | UptimeRobot | SitesRadar |
|---|---|---|
| Uptime / HTTP status | Yes — its core strength | Yes |
| Check interval | 5 min free, 30–60 s paid | Continuous scheduled sweeps |
| SSL certificate expiry | On paid plans | Yes, on every plan |
| Domain registration expiry | On paid plans | Yes |
| Broken links (full-site crawl) | No | Yes |
| Silent DNS record changes | No | Yes |
| Email deliverability (SPF/DKIM/DMARC) | No | Yes |
| Blacklist monitoring | No | Yes |
| SEO & metadata regressions | No | Yes |
| Status pages | Yes | No |
| SMS / voice alerts | Paid credits | No — email alerts |
Two things worth stating plainly. First, UptimeRobot’s sub-minute check intervals are faster than SitesRadar’s for pure downtime detection; if your contract includes a hard SLA measured in minutes, that matters. Second, UptimeRobot offers public status pages and SitesRadar does not.
Pricing for a client roster
UptimeRobot’s free plan (50 monitors, 5-minute checks) has been limited to personal, non-commercial use since October 2024. Monitoring client sites you are paid to maintain is commercial use, so a freelancer doing this properly is on Solo at $9/month (billed annually) or a team on Team at $38/month — plus SMS credits if you want text alerts.
SitesRadar is a flat $19/month for up to 10 client sites, or $39/month for 30, with every check included on every plan. There is no per-monitor math: one “site” covers its uptime, links, SSL, DNS, domain expiry, deliverability, and blacklist checks together.
For a solo freelancer with eight client sites, the comparison is $9/month for uptime pings versus $19/month for the full health sweep. Whether the extra $10 is worth it depends entirely on the next section.
When UptimeRobot is the right choice
- You run your own projects, not client sites, and the free tier’s terms fit your use.
- Your only contractual obligation is uptime, and you need sub-minute detection.
- You need a public status page.
- You already have separate processes for SSL renewals, link checking, and DNS.
There is no point paying for checks you genuinely do not need. UptimeRobot does its one job extremely well.
When SitesRadar fits better
The freelancer and small-agency failure mode is rarely a hard outage — hosting is reliable these days. It is the quiet regression: a WordPress update that breaks internal links, an ACME renewal that fails silently, a DNS change by the client’s “IT guy,” a form that stops delivering email. The client notices before you do, and the relationship damage is done regardless of whose fault it was.
If you maintain sites for clients and your reputation rides on catching those before they do, that is the job SitesRadar was built for. The “what it catches” section lists the full sweep.
Try the difference on a real site
The fastest way to see what uptime-only monitoring misses is to run one of your client sites through SitesRadar’s free checker — no signup, and it reports the link, SSL, DNS, and deliverability state of the site as a visitor experiences it right now. If the report comes back clean, an uptime pinger may genuinely be all you need. If it doesn’t, you have found the gap this comparison is about.