Yes, both ClickUp and UX-App offer a Free Trial.
ClickUp is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
UX-App is designed for Individuals, Medium Business and Small Business.
Pricing for ClickUp Starts at $7/User/Month when yearly whereas for UX-App Starts at $9/User/Month.
Some top alternatives to ClickUp includes Basecamp, Trello, TeamGantt, Asana, Teamwork, ProjectManager.com, ProWorkflow, nTask, Todoist and Height.
Some top alternatives to UX-App includes Figma, FigJam, UXPin, Justinmind, UXCam, UserX, UX Metrics, MockupTiger, Fluid UI, Mockplus, Uizard and Proto.io.