There has been a lot of noise recently about a shortage of apps in Windows Phone 7 Marketplace.
Winsource has done some research and found 76% of the 100 most popular app on Windows Phone, both paid and free, were cross-platform apps present also in the Apple App Store and Google Play Store.
The other 24% are mainly Xbox Live games (10) or other games.
The result suggests both that Windows Phone has been good at drawing developers from other platforms to Marketplace, and that those developers are often rewarded by a high rank in the sales charts.
In our estimate there are now more than 10 million Windows Phones out there, which I think it a pretty viable size to support developers and make it worth their while porting their apps to Windows Phone, especially when their sales start flagging on iOS and Android.
The message â€“ jump in, the water is fine!