Flutter app version change

By default, Flutter builds a debug version of your app.

They are the same. Old version of flutter use outputs/apk/release directory but they changed it to outputs/flutter-apk recently . The old directory is kept for compatibility with other building tools.

This tutorial shows you how to build APK files for Android for applications developed using Flutter. APK (Application Package File) is a format used by Android operating systems for distribution and installation . After you build an application, it’s quite common to build APK files to be tested across different devices.