Existing Ios app task

Hi I have this app [login to view URL] and [login to view URL] for get idea about tinder social please check it. [login to view URL] please do some research about what tinder social is, then u will get a better idea of what I m going to tell you I want to add some functions to it. also want to change the design, but i have the design ready!I have source code. to explain more lets say that u and me are going out fishing, i create a event, add you to the even group then there are 3 friends that wants to go out fishing as well, so they create a group and requests to join our event we think they seem to be good guys so we accepts their request, then they will be added to our groupchat so we can discuss how when and where we will go fishing. your job: the mathcing is like this 1. some one creates a event by him/herself or add friends to a group. 2. the event is shown in the feed 3. other people can create groups or by them selfs request to join the event if they send a request then the creator of the event gets a pushnotice where they can choose to accept or reject the request oh sry forgot, when a event starts a chat automaticly starts with the persons in the group for the event so if some other people gets accepted for the event they will be added to the chat as well u get it? Deadline: 7 days . not 8 days!!. Price 600$ . I will first create 100$ milestone and when you will finish 50% work .. I will create another 200$ and released both milestone. and when you will done next final 50% work I wil create another 300$ and releaed all. Of course source code after I paid you. you will send me test build file for testing ipa file. write : I am agree everything.