Like the rest of Amazon's Web services, the Android software shop offers personalized recommendations based on items you've viewed or purchased in the past--something not currently available via Google's Android Market.

Google's Android Market offers free trial, or "lite," versions of many paid applications so you can get an idea of how an app works before shelling out the cash to buy it. But Amazon's taking the app-trial process to a new level with its new Appstore for Android "Test Drive" feature.

Appstore for Android users can test out certain Android apps via their desktop PCs, using an in-browser, emulated Android device, to help determine whether or not they want to purchase the software.