(A screenshot from the Amazon Appstore)

The store will offer a paid app for free every day starting with its exclusive Android version of Angry Birds Rio. The normal price for the app is $1.

The site also has a section for free apps and discounted “Deals.” It operates like the rest of the Amazon site, with features such as one-click buying, and lets users return apps within the first 15 minutes of purchase.

Rovio generally dominates the mobile application market, and its Angry Birds and Angry Birds Seasons quickly rose to the top of the store’s best-selling paid apps. Angry Birds Rio was the most-downloaded free app.

One feature on the site is the option to test drive apps before downloading them. Users can use the mouse to control the apps as they would on their handsets.

Of course, there’s also an app for the Amazon Appstore itself, for Android devices.

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