title: How to get/post/update/delete data from a mongoDB database with an iOS app?
body: <p>I just finished creating an iOS app for a little startup and they have their own servers and database.</p>
  <p>They have the backend architecture using apache, NodeJS, Express, MONGODB.</p>
  <p>I created the app using firestore and firebase. The question is how can I link the app to that database server? They have all the info about users in that database.</p>
  <p>They also have a webapp built using react. So what I need is to basically sync the app with the webapp .</p>
  <p>Can somebody give me a little tutoring regarding this issue?</p>