Kivy language is easy to learn and implement , but it is in its development phase and not many folks are working In this environment. There is help available on different online platforms but it is difficult to get a solutions narrowed down to your specific issue.
Read moreIs KIVY easier than tkinter?
For simple programs, tkinter is a lot more straightforward and easier to get started with. Plus its library is built into the standard python installation package. Kivy offers more flexibility and is more complicated , but it also has support for mobile (android + IOS).
Read more