Despite getting off to a slow start, Google's Android Market has picked up steam in recent months and is on pace to become the biggest mobile content platform by August this year, according to a recent Research2Guidance report.

The study found the Android Market added 28,000 new apps in April alone, significantly outpacing Apple's App Store at 11,000 new apps.

This growth shouldn't come as too big a shock, given the equally strong growth experienced by the Android mobile operating system itself. In recent months, Android has become the fastest-growing smartphone OS in the world, particularly in the United States, where it accounted for 34.7 percent of the market as of March.

At this pace, the Android Market will reach 425,000 apps by August, overtaking Apple, which currently has an estimated 381,062.

Despite this strong growth, many experts are concerned about the security of Android apps. Given the operating system's open source licensing, it is more vulnerable to malware and viruses than others.