Build an app

A = service providers B = client of A The app is to provide a tool for a service provider (A) to find a client (B) and to provide a tool for B to find A in his/her surrounding. The A need to register to the app the make his service visible towards all clients (B). The B need to register to the app the make his service requests seen by A. A might be using website or App for the login B will use phone number as login mecahnism. An option to recover password is advised for B. The following details of A are needed: Name: School: Year: Contact Number: Services to be provided: Unit: email (optional) As A users will be premium version, A need to provide a payment details. Once the registration is done then A's will need to update one's calendar on 4 week basis. This The following details of B are needed: Name: Contact Number: Requested Services: Details Requested Services have been performed and which A which execute : (The first regristration is always empty) email (optional). When log in to the app, A will only have list of B views. When log in to the app, B will only have list of A views and the calendar of services. Views are supposed to be location vicinity based, meaning in A in one region can see only B in its region. This to limit spying capablities among A. Might be optional to be even viewable for all regions. Once the registration are done on both side, the A should be able to book B for the service being requested by B. The B should be able to request the service from A. No communication between 2 parts is possible. Once both A and B agreed on a certain service on a date and time. Then the communication is can be conducted using chat/phone service. All communications should be recorded. All appointments should be logged. I need also some details what needs to be prepared in live production system of such service. And possibly about missing parts in my planned app. I need to be able to test it.