Sometimes you may need to change the display name of your app, in this example, we are going to show you the easiest way to change the App name of both Android and iOS platforms made with flutter.
Edit AndroidManifest.xml file located at android/app/src/main/AndroidManifest.xml.
<application android:label="testapp" android:icon="@mipmap/ic_launcher">
change android:label text to change the display name of your app in Android Platform.
Edit info.plist file located at ios/Runner/Info.plist
<key>CFBundleName</key> <string>your app name</string>
After this don't forget to run the following commands:
flutter pub get
In this way, you can change the display name of your app for both Android and iOS platforms.