Detailed Comparison
When choosing between UptimeRobot and Pingdom, you are essentially choosing between cost and depth.
Pricing
UptimeRobot has been the king of the free tier for years. However, their paid plans start getting expensive quickly if you want faster check intervals. Pingdom, owned by SolarWinds, has no free tier and starts at $15/month for just 10 checks.
Modernity & Speed
The monitoring world has moved on. Modern apps need 30-second or 15-second checks to catch micro-outages. Statzly provides these high-resolution checks at a fraction of the cost of Pingdom or UptimeRobot's enterprise tiers.