Internal Android apps are distributed as APK files and can be installed directly on a device without going through the Google Play Store. This is commonly used for internal testing, or QA. Once installed, the app behaves like any other Android app on your phone.
Requirements
An Android device
An APK file provided by the Buildfire support team
Access to a cloud storage service (for example, Google Drive)
How to install an internal Android app
Request the APK file from the Buildfire support team
Upload the APK file to a cloud storage service such as Google Drive
Open the cloud storage link on your Android device
Download the APK file to your phone
When prompted with a security warning, allow installation from this source
Follow the on-screen prompts to complete the installation
Open the app from your device and start using it like any other app
Pro tips
Android may phrase the permission as “Allow from this source” or “Install unknown apps,” depending on the device and OS version
You can disable the permission again after installation for added security
Internal APKs are ideal for testing and review, but should not be used for public distribution