QuartzMaps

Map Rendering on iOS Using OpenStreetMap Data

QuartzMaps is our maps framework for displaying OpenStreetMap data and other maps on iOS. OpenStreetMap data can be rendered from vectors on device, reducing the file size while increasing the display quality. The framework has been improved continuously since 2010 and is used in many of our apps, such as OffMaps², City Guides, and SwitzerlandMobility.