(CNN) - Facebook and Google are fighting it out for domination of the smart phone, and Facebook is winning for now.
According to the latest stats from comScore, Facebook was the most popular mobile app in the U.S. in 2012.
Google Maps held the top spot until October.
While the social networking giant may have the Number 1 spot locked up, Google accounts for the next five most popular apps.
After Maps, Google Play, Google Search, Gmail and YouTube were the top apps on Android and iOS devices in December.