User Profile

Hi all, I am new to this forum and also a new developer when it comes to apple platforms. I am working on a project and planning to use a client-server approach. Meaning I get data from the phone of the user, transfer it to the server, do some data processing on the server and return a response of the result. Is it likely that this app will be rejected? I am confused about the guidelines especially the part about the software requirements that states only public APIs can be used and that the app must be self-contained.