What is package name in Buildozer spec?

There’s also an online interface to the android component of the buildozer tool (which can manage the entire android or ios build process, but I think doesn’t work on windows at the moment ), available at http://android.kivy.org/ . You can upload your project there to have the apk built.

Package domain is a string that references the company or individual that did the app . Both domain+name will become your application identifier for Android and iOS, choose it carefully. As an example, when the Kivy`s team is publishing an application, the domain starts with org.

Installing Buildozer with target Python 3 (default):