NEW YORK (TheStreet) -- Applications for Microsoft's (MSFT) - Get Report Windows Phone 7 platform are the cheapest of all the mobile application stores including those offered by Apple (AAPL) - Get Report, Google (GOOG) - Get Report, Research In Motion (RIM) and Nokia (NOK) - Get Report, according to a new report from app tracking firm Distimo.

Paid applications in the Windows Phone 7 store cost an average price of $1.95. This price is in-line with other marketplaces with the exception of Windows' previous operating system, Windows Mobile, whose applications are much more expensive.

>>Developers Hesitant On Windows Phone 7

The average price of the 100 most popular paid applications on Windows Phone 7 is $2.54 -- less than the average price of $3.05 in all other stores, but more expensive than those found on the iPhone.

Games are also much more popular on Microsoft's Windows Phone 7 platform than they are on Windows Mobile. All ten of the most popular paid applications on Windows Phone 7 are games, the report found.

Microsoft currently has more than 3,000 applications in its Windows Phone 7 Marketplace since it launched last month, according to the company. In contrast, Windows Marketplace for Mobile -- which was rolled out last year -- has 1,350 applications.

Apple's App Store has 300,000 applications while Google'sAndroid Marketplace boasts over 200,000 applications.

Microsoft is making a big push to promote the Windows Phone 7 this holiday season. The company is integrating applications in Bing Visual Search results, as well as within the Xbox dashboard.

Microsoft has seen an 80% uptick in the number of registered developers since September, and said that more than 15,000 developers have signed up to write applications for the platform.

--Written by Olivia Oran in New York.

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