MapBox is a suite of open source mapping tools. The MapBox iOS SDK can be used to create interactive map-driven applications for iOS devices. It also allows users to host their maps so that they can be embedded on webpages and shared with a wider audience. All maps created using MapBox are compatible with Android and iOS devices.
In October Google announced the cost for Google Maps if you use above 25,000 map loads per day. Many developers balked at paying for a service that had been free for several years, though it affected fewer than 1% of developers using the Google Maps API. Now the search giant is lowering the cost from $4-8 CPM to a fixed price of $0.50 per 1,000 map views. It will also start enforcing the price, though the company says this process is not automated.