Develop iPhone app appointment system

Online appointment system It's an iPhone app that let you make an appointment through its app. So, the user will be able to select what day & date he/she wants to make their appoint, it could be more than an appointment in one day. How can the user make an appointment? By selecting (Appointments "+") tab. After that page will come up with options, when the user tap on "+" button, page will display with a bar that has Unnamed appointment, so user should select what type of his appoint, for example meeting with a friend or Doctor .. etc. underneath this title, user should select what date he/she wants to start his appointment, once a user tap on it, a list will pop on and it has date/month/year. Once a user create that, the subject will appear with the title that a user chose, if not title will appear as "Unnamed Appointment". Next step, after a user tap on the "+" button, you can add colour to the title. Underneath the title, you can choose what type of appointments, so you have a list that has (Normal, Important, Very Important). Once you select the type, the appointment will create. You can add alarm to the title, for example 15 min before or more than that. Also, once you create an appointment, you will see in the calendar what colour that your appoint has and underneath the you will see the information about your appointment once you tap on the date that has an appointment.