Create an App

My company looks after residential gardens. Our company logo (see attached image) has 5 segments. Each segment represents the following services we offer: 1. Garden Design 2. Garden Creation 3. One-off Clearance  4. Routine Maintenance  5. Patio and Driveway Cleaning  So, I envisage users of the app to use our logo to select a service they require. Other options may be: I'm already a client. I'm not sure what I need. I want an App' to: 1. Build my client base. 2. Communicate with potential and new clients. 3 Gather numerical and written feedback, for quality control. Therefore, the app will include the follwing functions: [login to view URL] photos with company. 2. Chat with company representative through the app. 3. Through the chat, respond to feedback requests from company... marks out of 10, automatically following instruction / request of company, for 3 different success criteria. 4. Call the company through the app. 5. Email the company through the app. 6. Make a booking using calendar of availability. Calendar will automatically update, to show real time availability. 7. Share company contact details beyond the app (e.g. to Facebook or WhatsApp). The app must be very simple for prospective customers to use.