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An app store is an online store where people can purchase applications for mobile devices. The original app store was the App Store run by Apple to provide applications for its iPhone® and iPod Touch® users, and other companies picked up the concept so that they could create and sell applications to their users as well. Applications in an app store can vary in cost, from free downloads to quite costly ones, depending on who developed the application and its purpose. Most paid downloads are relatively low priced
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