Build me a iPhone app

Location based interactions app Project Summary: In our app, users can add each other as friends and track their location in real-time. They will also get notifications based on their location changes. Details - 3-4 screens for app introduction as sliders - Multiple step signup page (Phone number entry, number verification via sms, name/avatar) - Location permissions and tracking/persisting location history for each user - Search for users, add user with Name/Surname and phone number. When a new user is added as friend that does not exist in our sytem, an invitation will be send to the user as sms with invitation code and invitor details. After user opens the link and downloads our app, user can accept/reject the friend request of the invitor. - Users can list friend requests. They can also approve/reject requests. - Friends location listing on map with custom pins and list below based on the proximity of friends and their distance info. - Users can add their places such as my home, workplace by searching addresses or adding pins on the map. These places will create notifications for tracking users such as User arrived at workplace, user left workplace etc. - Users in friend list will get nofitications for the users they track based on their places. - Users can deactivate/delete their membership - Users can update their settings such as notifications, background updates, user’s choice of map (Google maps, Apple maps etc) - Users can contact as from contact us page via email and display about us, privacy, terms of use details. - Users can list notifications from the users they track. Notifications page should work in real-time meaning that the page should update without refreshing whenever new action happens. Requirements - Our app must be developed using Swift 3/4 - Our app can be developed completely using Firebase. If you prefer to use a scripting language such as Php for services and NodeJS/Socketio for real-time modules, we also need support for maintenance of the system during the lifecycle of project. Note: The design will be provided for you. It's %95 finished. When we agree i will send you the sketch design file. You don't have to design anything, we have a good designer.