Apple’s iTunes remains the market leader in the massively expanding market of mobile apps.

According to ABI Research estimates, the iPhone drew more than 5.6 billion accumulated downloads by the end of 2010, out of a total of 7.9 billion total app downloads from all stores during the year.

However, ABI forecast much more intensive competition in 2011, even following the launch of the Apple iPad 2 last week, as iPhone apps are matched or passed by app on other mobiel platforms.

“The iTunes App Store only targets iOS users; that leaves more room for other platform application stores to step up and focus on ‘non-Apple’ clientele,” said research associate Fei Feng Seet.

“Android smartphone quarterly shipments now exceed Apple’s.

“There is still a long way to go, but accumulated downloads from both Android Market and third-party platforms surpassed 1.9 billion by the end of 2010.

Android Market currently features more than 130,000 apps in 48 countries, nearly half of iTunes App Store’s catalogue.

“RIM has also been making a conscious effort to increase BlackBerry’s footprint in the mobile apps market, as seen in its recent aggressive expansion to over 100 markets, and developer conferences it has held in United States and Indonesia,” adds Seet.

ABI Research estimates that accumulated BlackBerry app downloads totalled more than 1 billion as of December 2010.

ABI Research’s mobile marketing practice director, Neil Strother adds, “More mobile network operators are also considering entry into the mobile application market; India’s Idea Cellular, for example, just launched its Online Application Store shortly in advance of its 3G network launch.” Multi-platform-supported app store GetJar has just raised $25 million for further expansion in a recent announcement, and plans to secure its position as the premier open-source app store.”

iPhone app reviews

Android app reviews

BlackBerry app reviews

Windows Phone apps