According to a chart from UK-based research firm IHS, Android Market revenues for 2010 were estimated at $102 million, an increase from $11 million in 2009. How does this compare to Apple's juggernaut-of-an App Store? Well, Apple's revenues for their App Store in 2010 were estimated at $1.7 billion.
That is 20 times bigger than the Android Market. Where the Android Market saw an 861.5-percent increase, Apple only saw a 131.9-percent increase. So Android is growing, but Apple is making a sweet-load more green than them. Google will need to sustain the growth they are enjoying now to catch up to where Apple are today.
Apple have a much tighter hold on their app-developers, where Google seems to be much more open. So while Apple are making money now, it does not guarantee them an app-friendly future, especially considering that Google has their mobile OS on many more branded handsets than just a single brand like Apple.