Today, Google added a new feature called "Application Statistics" to Android Market. "Basically, it's a new type of dashboard in the Market Developer Console that gives overview of the installation performance of apps. It provides charts and tables that summarize each app s active installation trend over time, as well as its distribution across key dimensions such as Android platform versions, devices, user countries, and user languages.
The dashboard also shows the comparable aggregate distribution for all app installs from Android Market (numbering in the billions). You could use this data to observe how your app performs relative to the rest of Market or decide what to develop next," explains Google.
"To start with, Google seeded the app Statistics dashboards with data going back to December 22, 2010. Going forward, we'll be updating the data daily."
You can access the Statistics dashboards from the main Listings page in the Developer Console.