Adding Clusters on my google maps in my swift App

Hi I have an app that needs some added functionality. Experience with the Google API is beneficial. There are three tabs at the top of my app: All, Lyft, Uber and in the project there are two JSON files with latitudes and longitude values called [login to view URL] and uber.json. What I need: - In the uber and lyft json files there are latitudes, longitudes and a number. I need Black circles on the map for uber and purple for lyft - There is a tab bar at the top, I need only the black circles showing when a user selects uber, only purple when a user selects lyft and both when a user selects both - Clustering! When zoomed out I want them clustered together like the image attached