This app is a demonstration of the ScheduleUtils open source library. This library facilitates working with schedule/appointment items and hours of business. Features: 1. Add and edit schedule items while checking that the items do not constitute double bookings, or simply delete them. 2. Sort schedule items in ascending or descending order based upon start time, duration or end time. 3. Get all available slots between given times. 4. Find out when next availability slot is based upon hours of business, schedule items and a given time. 5. Check if time is within business hours on particular day of the week. 6. Check if there is a schedule item in progress at a given time. 7. Check if an entity is available at a given time bases upon a list of schedule items and hours of business. 8. Get opening hours for a given day. 9. Find when a business is next open on or after a given. 10. Use library to see if there are appointments for a certain day.