Although most Android users download apps from preloaded app stores like Google Play, some users get their apps from alternative online sources, a practice called sideloading. This is possible because Android lets users install third-party apps without the Google Play Store so long as they get their hands on the necessary app installation files. The ability to freely sideload apps is a big part of what makes Android a more open platform than iOS. Unfortunately, it’s also the reason why people erroneously believe that Android is less secure than iOS..