CustomTkinter vs Kivy
Side-by-side — pricing, strengths, tradeoffs, and fit.
CustomTkinter
Modern and customizable Python UI library based on Tkinter.
Kivy
Create NUI applications for multiple platforms with Kivy.
At a glance
Open SourceFree Tier
● Established·From $0
Open SourceFree Tier
● Established·From $0
Overview
One-liner
One-liner
Modern and customizable Python UI library based on Tkinter.
One-liner
Create NUI applications for multiple platforms with Kivy.
Maturity
Maturity
EstablishedMaturity
EstablishedOpen source
Open source
✓ YesOpen source
✓ YesPricing
Free tier
Free tier
✓ AvailableOpen source — free to use
Free tier
✓ AvailableOpen source — free to use
Starts at
Starts at
$0
Starts at
$0
Model
Model
Flat rate
Model
Flat rate
Enterprise
Enterprise
✕ NoneEnterprise
✕ NoneBest for
✓ Best for
Python developers who need to create modern-looking UIs quickly and easily
Projects requiring a balance between customization and ease-of-use in GUI development
Developers looking for an alternative to more complex UI frameworks like PyQt or Kivy
✓ Best for
Developers looking to build cross-platform applications with multitouch support.
Teams needing a flexible UI toolkit for rapid prototyping.
Projects requiring natural user interface elements across multiple platforms.
Not ideal for
✕ Not for
Projects that require highly specialized UI components not covered by CustomTkinter's library
Teams needing real-time collaboration features within the UI framework itself
✕ Not for
Applications that require real-time data streaming capabilities not supported by Kivy.
Large-scale enterprise applications where specific performance optimizations are critical and may not be available in Kivy.
Strengths
↑ Strengths
Modern and customizable UI components
Enhanced visual design compared to traditional Tkinter
Easy integration with existing Python applications
Active community support and frequent updates
↑ Strengths
Cross-platform support for Windows, Linux, Mac OS X, Android and iOS.
Supports multitouch input.
Highly customizable UI components.
Built-in widgets for common interface elements.
Weaknesses
↓ Weaknesses
Limited cross-platform consistency in appearance and behavior
Performance issues with complex UIs
Small community and slower development pace compared to mature frameworks
Documentation lacks depth for advanced use cases
↓ Weaknesses
Steep learning curve for non-Python developers
Performance issues on complex UIs
Limited commercial support and small community
Frequent breaking changes between versions