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Kivy VS Flet

Compare Kivy VS Flet and see what are their differences

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Kivy logo Kivy

Open source Python framework for rapid development of applications that make use of innovative user interfaces, such as multi-touch apps. Installation on WindowsInstallation on Windows. Installation; What are wheels .

Flet logo Flet

Build internal web apps quickly in the language you already know.
  • Kivy Landing page
    Landing page //
    2023-09-15
  • Flet Landing page
    Landing page //
    2023-08-28

Kivy features and specs

  • Cross-Platform
    Kivy allows you to write your application code once and run it on multiple platforms, including Windows, macOS, Linux, iOS, and Android, reducing development time and effort.
  • Open Source
    Kivy is an open-source framework, which means it is free to use and has a community-driven development model. This also allows developers to contribute to its improvement.
  • Rich User Interface
    Kivy provides a wide range of widgets and controls that can be customized to create highly interactive and attractive user interfaces.
  • Touch Support
    Kivy is designed with built-in support for multitouch events, making it a good choice for applications that require touch interactions.
  • Dynamic and Fast
    Thanks to its use of Cython, Kivy applications can achieve high performance and responsiveness.
  • Consistent Look and Feel
    Kivy apps maintain a consistent look and feel across all supported platforms, which can lead to a better user experience.

Possible disadvantages of Kivy

  • Steep Learning Curve
    Kivy can be challenging for beginners due to its custom language (Kv) and lack of extensive documentation.
  • Limited Community Support
    Compared to more established frameworks, Kivy has a smaller user community, which can make finding help and resources more difficult.
  • Lagging behind in Platform Integration
    Kivy may not offer the same level of integration with native platform features (such as navigation and notifications) as other frameworks like React Native or Flutter.
  • Debugging Complexity
    Debugging Kivy applications can be complex, especially when dealing with cross-platform issues, as the error messages are not always straightforward.
  • Performance Issues on Some Platforms
    Performance may not be consistent across all platforms, particularly on iOS devices where Kivy apps might suffer from performance degradation.
  • Limited Third-Party Libraries
    The ecosystem of third-party libraries and plugins is not as extensive as those available for other popular frameworks, which might limit functionality.

Flet features and specs

  • Ease of Use
    Flet provides a straightforward API that simplifies the process of building interactive web applications, making it accessible even to those with minimal web development experience.
  • Cross-Platform Support
    Flet supports multiple platforms, allowing developers to create applications that can run seamlessly across different devices and operating systems.
  • Rapid Development
    With a focus on fast development cycles, Flet enables developers to quickly prototype and deploy applications, significantly reducing time to market.
  • Rich UI Components
    Flet offers a wide range of built-in UI components that help developers create visually appealing and functional interfaces without having to start from scratch.
  • Community and Documentation
    Flet comes with comprehensive documentation and an active community, providing valuable resources and support for developers throughout the development process.

Possible disadvantages of Flet

  • Limited Customization
    While Flet offers many built-in components, the level of customization available may not satisfy developers looking for highly tailored UI experiences.
  • Dependency on Flet Ecosystem
    Developers are tied into the Flet ecosystem, which could pose challenges if they need to integrate with other tools or want to migrate away in the future.
  • Performance Concerns
    As with many high-level frameworks, there might be performance overheads, especially for resource-intensive applications.
  • Learning Curve
    Although designed for ease of use, developers familiar with other web development frameworks may need time to learn and adapt to Flet's unique features and paradigms.
  • Emerging Technology
    Being a relatively new technology, Flet might still be undergoing changes, which may lead to stability issues or lack of long-term support.

Kivy videos

+ Add

Kivy Intro - Mobile and Desktop App Dev w/ Python

More videos:

  • Review - Starting on a GUI: WXpython vs Kivy #MP55

Flet videos

+ Add

FLET Can Cooler กระป๋องน้ำจะไม่หายเย็นก่อนกินหมดอีกต่อไป - Pond Review

More videos:

  • Review - FLET Tumbler รุ่นใหม่ แก้ปัญหาของตัวเก่าได้ครบทุกจุด! - Pond Review
  • Review - Ekskluzive/ Detaje të reja nga vrasja e Shëngjinit, flet familjarja e Lekstakajve Nertila Haxhia

Category Popularity

0-100% (relative to Kivy and Flet)

Kivy

Flet

Developer Tools
82 82%
Developer Tools
18% 18
Application And Data
0 0%
Application And Data
100% 100
Game Engine
100 100%
Game Engine
0% 0
Development Tools
0 0%
Development Tools
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Kivy and Flet

Kivy Reviews

25 Python Frameworks to Master
Unlike PyQt, Kivy is free and open-source, isn’t a wrapper around an external UI library, and is licensed under the MIT license, which means you can ship and monetize your Kivy apps.
Source: kinsta.com
Which Python GUI library should you use? Comparing the Python GUI libraries available in 2023
The look and feel of Kivy is extremely customizable, allowing it to be used as an alternative to libraries like Pygame (for making games with Python). The developers have also released a number of separate libraries for Kivy. Some provide Kivy with better integration and access to certain platform-specific features, or help package your application for distribution on...
Source: www.pythonguis.com
10 Best Python Libraries for GUI
Kivy was written with a mix of Python and Cython, and it helps build some of the most intuitive user interfaces with multi-touch applications. These multi-touch applications help implement Natural User Interface (NUI), which is a type of interface where the user naturally learns about the various interactions while they’re usually invisible.
Source: www.unite.ai
Top 6 Python Framework for Game Development | by Ankur Kumar | unikaksha | Medium
Kivy is a Python game development framework for businesses. It’s an open-source Python library that lets programmers easily construct apps with unique user interfaces, such as multi-touch apps. Kivy assists in developing apps for Windows, Linux, and iOS devices such as iPhones, iPads, and Android devices such as phones and tablets.
Source: medium.com
Top 10 Python GUI Frameworks for Developers
With Kivy, interface designers can code once and deploy to multiple platforms, while the built-in support for OpenGL ES 2 allows them to use modern and powerful graphics and design techniques. The most common use of the Kivy GUI framework in the real-world can be seen in our Android and iOS applications. Other widespread implementations of the framework can be seen in the...
Source: towardsdatascience.com

Flet Reviews

We have no reviews of Flet yet.
Be the first one to post

Social recommendations and mentions

Kivy might be a bit more popular than Flet. We know about 47 links to it since March 2021 and only 38 links to Flet. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Kivy mentions (47)

  • Plain – a web framework for building products with Python
    There are some things available, and people are working on it. Coincidentally, one of those people is Russell Keith-Magee of Django fame, who founded the BeeWare project. https://beeware.org/ https://beeware.org/about/team/freakboy3742/ https://kivy.org/. - Source: Hacker News / about 1 month ago
  • How to Develop a User Data Storage Registration Form Using Python.
    We will create this complete Python registration form using Kivy. We get started by installing Kivy, a powerful Python framework for building interactive applications. - Source: dev.to / about 1 year ago
  • Ask HN: Can I create a mobile and Web App using Python/Python Framework?
    For reference, YouTube runs on Python[1,2,3]: > 1. Python and Django: YouTube’s backend is predominantly written in Python, offering a balance of performance and readability. > 2. Google Cloud Platform... > 3. Java and C++: YouTube also utilizes Java and C++ for specific backend services, as they provide better performance for certain tasks. --- A long time ago, I looked into these Python frameworks: -... - Source: Hacker News / about 1 year ago
  • Python GUI libraries? <3
    I suggest you use kivy which is suitable for the desktop but also has the advantage of being one of few options for creating Python based native(ish) mobile apps (for IoS and Android app stores). Source: over 1 year ago
  • Ask HN: Best framework to build a GUI app in Python for windows and macOS?
    I think the best one right now for python is "beeware": https://beeware.org/ You also have Kivy which is prety good: https://kivy.org/. - Source: Hacker News / over 1 year ago
View more

Flet mentions (38)

  • Using Uv and PEP 723 for Self-Contained Python Scripts
    It's more the latter, particularly when Rust is used in libraries (eg. FastAPI) as opposed to tools, as it's destroying portability. For example I use flet[0] in some of my projects, and I have to be increasingly careful about the other dependencies as there is no support for the Rust toolchain within Dart/Flutter, and even if there was it still sounds like it'd be a nightmare to maintain. Same applies to any... - Source: Hacker News / about 1 month ago
  • All Data and AI Weekly #182 - 24-March-2025
    Cool Stuff of the week ⚡️ https://flet.dev/. - Source: dev.to / about 1 month ago
  • Show HN: Robyn – "Batman Inspired" Python Web Framework Built with Rust
    The problem with all this combining is that it's making apps less portable. Like I want to make apps that work on desktop+mobile with flet[0], but now I have to specifically seek out more "traditional" alternate packages and hope they stayed in reasonable feature parity with these Rustified Frankensteins. Not a fan at all. [0] https://flet.dev. - Source: Hacker News / 2 months ago
  • Building a calculator using Flet with python
    In line 7 we define the main app instance to Page; a page is a container for View Controls. So here I won’t go deep into views since it’s beyond the scope of this tutorial, but you reference here. - Source: dev.to / 8 months ago
  • Kivy – a cross platform Python UI framework
    One cross platform Python framework I found interesting is flet https://flet.dev/ It's powered by Flutter behind the scenes and familiar enough so that you can translate most things from Flutter/Dart tutorials to Flet. - Source: Hacker News / 10 months ago
View more

What are some alternatives?

When comparing Kivy and Flet, you can also consider the following products

Blender - Blender is the open source, cross platform suite of tools for 3D creation.

Flutter - Build beautiful native apps in record time 🚀

Unity - The multiplatform game creation tools for everyone.

BeeWare - Write your apps in Python and release them on iOS, Android, Windows, MacOS, Linux, Web, and tvOS...

Unreal Engine - Unreal Engine 4 is a suite of integrated tools for game developers to design and build games, simulations, and visualizations.

JavaFX - JavaFX is the next step in the evolution of Java as a rich client platform.

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