Quantity rarely equals quality, of course, but it's still fairly notable that the Android Market has now managed to top 20,000 apps just a little over a year after it opened its doors -- Apple's App Store had over 50,000 apps a year into its existence, for those keeping track. Even more interesting, however, is the distribution of free and paid apps in the Market. According to AndroLib, fully 62.2% of the apps available are completely free, compared to just 37.8% that are paid apps. That's in stark contrast to the App Store, which now has over 100,000 individual apps, of which (by some recent counts) a hefty 77% are paid applications -- although only 30% of total App Store downloads are for paid apps. What does it all mean? Well, that's open for debate. But one thing's for sure: the rest of the app store contenders are going to have to work some special pie chart magic to come out looking good in this battle.