When comparing Kivy vs Tkinter, the Slant community recommends Kivy for most people. In the question“What are the best cross-platform GUI toolkits?” Kivy is ranked 8th while Tkinter is ranked 20th. The most important reason people chose Kivy is:
Kv design language is designed to work well with scalable graphical user interfaces (GUIs) as one of its primary focuses. It also segregates the logic from the design elements, making them easier to visually distinguish from each other.
Specs
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Pros
Pro Kv design language
Kv design language is designed to work well with scalable graphical user interfaces (GUIs) as one of its primary focuses. It also segregates the logic from the design elements, making them easier to visually distinguish from each other.
Pro Multitouch gestures
Pro Free for commercial use
Pro Included in the standard Python library
You probably already have it, since it's included in the standard Python distributions.
Pro Easy to learn and get productive with
TkInter is a small library with a gentle learning curve compared to what’s out there. It has a straightforward API and is often the go-to choice for building quick GUIs for Python scripts.
Pro Building executables is less complicated
Compared to other GUI libraries, building executables for TkInter applications are simpler because TkInter is included in Python and has no other dependencies. This results in less complicated packaging requirements and smaller binary size.
Pro Fast
Cons
Con Documentation & examples are terrible
Terrible documentation & not too many resources can be found.
Con Very difficult to deploy to various platforms, like Android
Con No advanced widgets
TkInter does not come with advanced widgets out of the box (e.g. date picker).
Con Not good looking
You need a lot of code to make it look good.
Con No reliable UI builder available
There is no tool in the same league as Qt Designer (PyQt) for TkInter.