Add few features to iOS App

Hello, I have an existing iOS application written on Objective-C, and I require few new features to be added such as: 1) Messenger: send a text, a vocal message (record on the fly or pick from files) or an image (take picture from device camera, or pick from gallery) to the server. There is 1 role based screen to show (see attachments). 2) Alarm feature: wake up the device screen (if it's off) upon a dedicated push notification reception. And bring up the front the application's alarm screen (this screen is already available in the app). + Add a slider to that screen to deny the alarm or forward to server. 3) Settings: allow user to On/Off the bell and vibration for the Alarm feature. User should be able to choose the bell of his choice from device built-in ringtones. 4) During app start, load from server and display the latest logo to all screens (approx. 4). 5) Show pushed notifications (native feature). All these features will dialog using REST API + JSON (already available from server side), the swagger file will be provided later. Messenger & Settings menu need to be added to application left main menu. All screens are attached here. I need the delivery within 3 days max from its start.