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apk (file format)
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<p>The Android Package with the file extension apk is the <a href="/facts/File_format/qrXbwJaH">file format</a> used by the <a href="/facts/Android_(operating_system)/nNyHb0xz">Android operating system</a> and a number of other Android-based operating systems for distribution and installation of <a href="/facts/Mobile_app/r7vp6meo">mobile apps</a>, <a href="/facts/Mobile_games/H3e7p0K7">mobile games</a> and <a href="/facts/Middleware/HobNosz9">middleware</a>. A file using this format can be built from source code written in either <a href="/facts/Java_(programming_language)/9ScgFyAL">Java</a> or <a href="/facts/Kotlin_(programming_language)/CrAqIFLn">Kotlin</a>. </p><p>APK files can be generated and signed from <a href="/facts/Android_App_Bundle/Ue2Lbq2u">Android App Bundles</a>. </p>