Created app with App Inventor 2 and you want use custom package name on your app but you dont know how to do it? We have a many option for changing package name…
Here simplest one : Use Kodular for changing package name.
As you know Kodular is a Ai2 distribution.Kodular offers awesome new features for makers.Like custom package name.Its free and easy.
1)First download and upload your aia to Kodular
Screen1 Properties > Advanced > Custom Package Name

Bingo! Know we can export app with custom package name

Dont forget check you app ui for changes.Switching to Kodular can change your app ui!