DropBuddies, the Postmates of Nigeria, launched an API that allows local businesses to include courier services directly within their apps. Without leaving the integrated business' app, users get a delivery quote, ETA, and book a delivery. Once booked, users can track shipments through delivery.
After continued developer requests, Google has added marker clustering to Google Maps SDK for iOS Utility Library. The feature allows users to populate maps with a large number of markers while keeping the map clean and readable. As zoom levels adjust, markers aggregate and slit out accordingly.