Yes, both ApiChecker and Uptrends offer a Free Trial.
ApiChecker is designed for Medium Business and Small Business.
Uptrends is designed for Large Enterprises, Medium Business and Small Business.
Pricing for ApiChecker Starts at $4.58/Month when Billed Yearly whereas for Uptrends Starts at $15.47/Month when Billed Yearly.
Some top alternatives to ApiChecker includes Uptime, Uptime Robot, Hyperping, UpTime.onl, updown.io, Uptrends, pingnow.io, 66uptime, Loadping and Pingt.io.
Some top alternatives to Uptrends includes Freshping, Uptime, DevMonitor.io, Monitis, SolarWinds Pingdom, Visualping, pingnow.io, Epic Ping, PingPing and Pingt.io.