Yes, both Hydrozen.io and Uptrends offer a Free Trial.
Hydrozen.io is designed for Large Enterprises, Medium Business and Small Business.
Uptrends is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Hydrozen.io Starts at $16.66/Month when Billed Yearly whereas for Uptrends Starts at $15.47/Month when Billed Yearly.
Some top alternatives to Hydrozen.io includes Uptime, Uptime Robot, UpTime.onl, SiteUptime, Uptrends, 66uptime, WebForce Uptime, Pingt.io and 4Uptime.
Some top alternatives to Uptrends includes Freshping, Uptime, DevMonitor.io, Monitis, SolarWinds Pingdom, Visualping, pingnow.io, Epic Ping, PingPing and Pingt.io.