``The Apple App Store is a digital application distribution platform for iOS developed and maintained by Apple Inc. The service allows users to browse and download applications that were developed with Apple's iOS SDK. The apps can be downloaded directly to an iOS device, or onto a personal computer (Macintosh or PC) via iTunes.
Applications in the App Store are generally targeted at iOS devices, including iPhones and iPads, and may take advantage of specific attributes of those devices, such as motion sensors for game controls and cameras for online video calling. Apps may be downloaded for free or for a set cost, and they may include in-app monetization through advertising or purchases. Apple takes 30 percent of all revenue generated through apps, and 70 percent goes to the app publisher.``
``Google Play, formerly known as the Android Market, is a digital application distribution platform for Android and an online electronics store developed and maintained by Google. The service allows users to browse and download music, magazines, books, movies, television programs, and applications published through Google. Users can also purchase Chromebooks and Google Nexus-branded mobile devices through Google Play.
Applications are available either for free or at a cost. They can be downloaded directly to an Android or Google TV device through the Play Store mobile app, or by deploying the application to a device from the Google Play website. These applications are generally targeted to users based on a particular hardware attribute of their device, such as a motion sensor (for motion-dependent games) or a front-facing camera (for online video calling).``
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