An online scheduling system enables clients to book services at any time of day—even after hours or on weekends. Some schedulers, like SetTime, allow clients to view the available time slots of professionals in real time, message them with any questions, read reviews and see the pricing, reschedule or cancel appointments through the app, and be reminded of upcoming bookings. The business side of the platform helps service providers better manage their schedules, save client information, send reminders to minimize no-shows, manage employee shifts, prevent double booking, and much more.