Traccar xcode 9 integration

Can you please explain the step by step process of how to integrate Traccar to my existing iOS application.?

Are you talking about Traccar Client? It's not a library. If you want to integrate it you would have to take bit and pieces of the source code. There is no step by step guide for it, obviously.

i want to track the device from my app with traccar.
please help how to do that

Why is in Traccar Client forum then? It seems like you need to do some reading first before asking questions.