APK Exporter app makes it easy the task of saving or share the APK file of any of your apps. Simply select the app that you like to share and click the menu button to see the options. You can configure it to display system and user apps or only user apps, and also include a useful search tool.
his app requires root permissions
When you select an app (or a group of apps) we will list all apps that can be used to share them. You only need to select one (note that some apps limit the size of the shared items, like the email app from G, which can limit the size of the individual attachment to 20Mb)