KivyMD

There is a galaxy of projects around Kivy, such as https://github.com/kivy/python-for-android to compile python project for Android (with Kivy or not) or https://plyer.readthedocs.io/en/latest/ for cross plateform API (notifications, hardware, filechooser, etc). For UI there is https://github.com/kivymd/KivyMD for Material design on top of Kivy. And the team is nice (I've met some of them at PyCon or FOSDEM). The framework is pleasant to use, and there is a descriptive language, kv, which is really great. Cross compiling may be painful though (I did it for Android) and the app loading time is a bit long, but it's working. Some things may be missing in comparison to big frameworks such as Qt, there is no WebView for instance, and accessibility is unfortunately not as good. It's overall a very good project and it's a pity that it's not more

Not sure about Tkinter for Android[0], but for Python for Android take a look on Kivy/Py4A.[1,2] As for Py/Qt for Android there is QPython.[3] But, sadly, there are NO good Android alternative to "PyS60" (Python for Symbian S60).[4] [0] https://learning-python.com/using-tkinter-programs-on-androi... [1] https://github.com/kivy/kivy [2] https://github.com/kivymd/KivyMD [3] https://github.com/qpython-android/qpython3 [4] https://en.wikipedia.org/wiki/PyS60

I think it's still generally the case that Kivy apps tend to use the default (clunky) theme or something more custom, but there has recently been some user activity around alternatives, e.g. a set material design themed widgets (https://github.com/kivymd/KivyMD). I'm not sure if any apps using this have been published on the Play store. We've been discussing how to include more unified themeing capabilities in Kivy itself, ideally as a big new feature in the upcoming 2.0 release. Edit: I wrote a post at http://inclem.net/2016/01/15/kivy/kivy_android_app_showcase/ about some of the best published Kivy apps including themeing considerations, although they don't aim for a standard Android UI either. I see in your edit you've already seen this though.