'Runner'

'Debug-free'

=>

:debug

'Profile-free'

=>

:release

'Release-free'

=>

:release

Using flavors in Android

Setting up flavors in Android can be done in your project’s 
build.gradle file.

Inside your Flutter project, 
navigate to android/app/build.gradle.

Create a flavorDimension to group your added product flavors.
Gradle doesn’t combine product flavors that share the same dimension.

Add a productFlavors object with the desired flavors along
with values for dimension, resValue,
and applicationId or applicationIdSuffix.