KDDI has announced that its au SmartPass a-la-carte app service has surpassed 10 million paid subscribers (as of March 17th), which is double its total subscriber base from around this time a year ago. It initially launched two years back in March of 2012. The monthly subscription service charges a fee of 390 yen per month, giving users access to hundreds of mobile applications, as well as other services like coupons, storage, security, and backup. KDDI/au had a total mobile subscriber base of about 40 million users in total in Japan in February. Via BCN