Startup Idea : App for booking appointment for Doctor

The general practice for booking an appointment for a particular doctor or physician is generally by visiting the chamber or through phone calls. It takes extra time an energy to visit the chamber once for the booking and next for the appointment since not all the time the phones are available to book or take the appointment. We are interested to design one single Mobile app which can have all the hospitals and doctors in your city would be registered and can be taken appointment by the patient or the attendant. the reminder massage can be fixed to remind the time of scheduled visit or cancellation of appointment in case of emergency absence of the doctor.