Adding features to an existing app

An existing app that needs a few points done: 1- A screen with three tabs: Tab 1: This tab request a json file from backend server, transfer the data into switches and switches with a slider based on the data received. When clicked, an HTTP GET request will be sent to the backend server. Tab 2: That same json file contains different data. Here we want a switch, few buttons "cool, heat, off" and a sider for temp degrees. An illustrative image will be sent. Tab 3: Create it but leave it empty for now. 2- Second Screen (Cameras Screen): the SDK for the cameras is present with an iOS examples to build upon (don't know if examples are in objective C or Swift). IP, username and password will be set manually in settings page. The cam screen should have each cam with its name and a screenshot that should be updated every 4 days. When a cam is clicked, the live feed of the cam should open with buttons (will provide screenshots). 3- A mic button on a couple of different screens. When the button is pressed it opens a socket and starts to send its buffer through that socket. A silence detector to stop the mic is to be expected ([login to view URL]) 4- implement a simple tcp client to send messages and associate it with all buttons of the app. This way, Pressing a button on the remote screen would send simple TCP messages to the backend server (will provide the text that should be sent). 5- Implement FCM notifications.