Yes, both Setster and OpusTime offer a Free Trial.
Setster is designed for Large Enterprises, Medium Business and Small Business.
OpusTime is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Setster Starts at $20/Month whereas for OpusTime Starts at $35/Month when Billed Yearly.
Some top alternatives to Setster includes Appointy, Calendly, Cogsworth, OpusTime, Book Like A Boss, Scheduly, ScheduFlow, SnapAppointments, GoSchedule, hitAppoint, DaySchedule, i-Scheduling for Appointments and Rezrva.
Some top alternatives to OpusTime includes Appointy, Setmore, Calendly, Cogsworth, Book Like A Boss, Scheduly, SnapAppointments, Online Appointment Scheduler, ClickBook, Appointmind, Web-appointments, i-Scheduling for Appointments and Zoho Booking.