title: Implementing MapKit iOS Xcode
body: <p>I am implementing Mapkit in iOS application to make an application which shows posts to users based on his/her location like tinder do. I have tried an algorithm which calculates distance based on coordinates between user and posts. But it seems to be a very costly solution in terms of time, it has a very high complexity, i just wanted to ask is it the right way am doing or should i change my approach. Thank You.</p>