Google Maps SDK for iOS Utility Library
This open-source library contains classes that are useful for a wide range of applications using the Google Maps SDK for iOS.
- Marker clustering — handles the display of a large number of points
- Quadtree data structure - indexes 2D geometry points and performs 2D range queries
- Geometry libraries - KML and GeoJSON rendering
- Heatmaps - Heatmap rendering
For more information, check out the detailed guide on the Google Developers site.