Yes, both Intervals and ProWorkflow offer a Free Trial.
Intervals is designed for Individuals, Large Enterprises, Medium Business and Small Business.
ProWorkflow is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Intervals Starts at $29/Month whereas for ProWorkflow Starts at $9/User/Month when Billed Yearly.
Some top alternatives to Intervals includes Quickbase , Smartsheet, ClickUp, Zoho Projects, TimeTracker App, Tick, TimeTrack, Time Track Bill, TimeControl, Wrike, Track My Work, Teamwork, ProjectManager.com, ProWorkflow, Quick Base and TaskBlast.
Some top alternatives to ProWorkflow includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Wrike, TeamGantt, Asana, Teamwork, ProjectManager.com, WorkflowMax, ProProfs Project, Projectworks, Taskworld, WirTask, Quick Base and Flow.