Yes, both PingStack and Apex Ping offer a Free Trial.
PingStack is designed for Medium Business and Small Business.
Apex Ping is designed for Medium Business and Small Business.
Pricing for PingStack Starts at $9/Month whereas for Apex Ping Starts at $10/Month.
Some top alternatives to PingStack includes Uptime, Uptime Robot, Hyperping, DevMonitor.io, UpTime.onl, CallView 360, SiteUptime, pingnow.io, WatchSumo and Loadping.
Some top alternatives to Apex Ping includes Freshping, Uptime, Uptime Robot, Hyperping, UpTime.onl, SolarWinds Pingdom, pingnow.io, Epic Ping, WebForce Uptime and Pingt.io.