ReadWriteWeb

Not too long ago, for most of us, MapQuest was the default online mapping service. Even today, after a number of changes to its site, MapQuest is still one of the most popular places to get maps and directions online, even though other services like Google Maps or Microsoft's Bing Maps (formerly known as Live Maps) offer more features.

Today, MapQuest released its first iPhone app, MapQuest 4 Mobile (iTunes link), and after testing it for a while, it quickly became clear that MapQuest's app is a worthy challenger for the iPhone's built-in mapping application, which is based on Google Maps.