Yes, both Datadog APM and Splunk On-Call offer a Free Trial.
Datadog APM is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Splunk On-Call is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Splunk On-Call begins at $5/User/Month when Billed Yearly, while pricing details for Datadog APM are unavailable.
Some top alternatives to Datadog APM includes Retrace, Scout APM, New Relic APM, Nastel AutoPilot, AppDynamics, Dynatrace, Instana, Thundra APM and APImetrics.
Some top alternatives to Splunk On-Call includes Freshservice, PagerDuty, Opsgenie, VictorOps, AlertOps, Spike.sh, opsmanager, Zenduty, StatusCast Incident Management and PagerTree.