Which simple python 3d engines exists for android-developing?

Answer 1

This link is about Kivy Python module which is a GUI module built for mobile applications.
https://realpython.com/mobile-app-kivy-python/#:~:text=Python%20doesn't%20have%20built,in%20the%20Python%20mobile%20space.

And this thread may help you more about GUI Python Modules. I hope these helps.
https://www.sololearn.com/Discuss/187639/?ref=app