Tested on Android 12, though some users on newer OS versions (like Android 13/14) have reported installation errors Installation Guide : Obtain the file directly from a trusted developer source like StudioWhy on itch.io to avoid malware. Enable Unknown Sources Settings > Apps > Special App Access > Install Unknown Apps and toggle permission for your browser or file manager. : Open your "Files" app, locate FlutterMare 1.3.0.apk , and select "Install" when prompted. Optimization