Go to your Android settings, select "Security" or "Privacy," and toggle on "Install apps from unknown sources."
However, downloading APKs from unofficial sources carries significant security risks.
Finding niche aviation apps outside of the Google Play Store can be tricky—and sometimes risky. In this guide, we will cover what RGN Air is, why people are looking for the APK, and the critical safety steps you must take before downloading any third-party application.