Because sideloaded APKs do not receive automatic updates through the Google Play Store, users must periodically apply updates manually.
Performing an In-Place Overwrite Upgrade
You do not need to uninstall your current app to update. As long as the newer APK is signed with the same cryptographic key, you can simply download the updated package and tap Install.
Android will recognize the update and apply the new binaries while preserving your saved playlists, downloaded settings, and login session.