Flet
UnclaimedBuild multi-platform applications for web, mobile, and desktop using only Python.
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Tracked since2026
0 reviews trackedThe Bottom Line
Entry price
Free, no paid tier
Biggest pro
Eliminates need for frontend languages (Dart, Swift, Kotlin, HTML, JavaScript)
TL;DR - Flet
- Build multi-platform apps (web, mobile, desktop) using only Python.
- Leverages Flutter for UI, offering 150+ built-in controls and services.
- Supports packaging for standalone executables and deployment to app stores.
Pricing: Free forever
Best for: Individuals & startups
What is Flet?
Flet allows developers to create real-time web, mobile, and desktop applications using pure Python, eliminating the need for frontend experience or knowledge of languages like Dart, Swift, Kotlin, HTML, or JavaScript. It leverages Flutter to render beautiful UI widgets with Material and Cupertino design, offering over 150 built-in controls and services for layout, navigation, dialogs, and charts.
The platform supports a single codebase that runs consistently across iOS, Android, Windows, Linux, macOS, and web. Flet apps can run natively in modern browsers using WebAssembly and Pyodide without a server, or be deployed as Python web apps with real-time UI updates. It also includes built-in packaging to create standalone executables or bundles for various platforms, enabling instant deployment to app stores. Developers can test their projects on mobile devices with the Flet App, seeing updates in real-time as changes are made. Flet is extensible, allowing users to wrap Flutter packages or build new controls with Python, and is built with accessibility in mind due to its Flutter foundation.
Available on: Web, iOS, Android, Windows, Linux, macOS
Pros & Cons
Pros
- Eliminates need for frontend languages (Dart, Swift, Kotlin, HTML, JavaScript)
- Enables rapid development with a single Python codebase for all platforms
- Provides a rich set of UI components with modern design principles
- Allows leveraging existing Python libraries for mobile and desktop apps
- Simplifies deployment with built-in packaging and app store readiness
Key Features
Single codebase for iOS, Android, Windows, Linux, macOS, and webBuild entire app in pure Python150+ built-in UI controls and services (Material and Cupertino design)Support for 50+ Python packages (Numpy, pandas, pydantic, etc.) for iOS and AndroidFull web support (WebAssembly, Pyodide, server-side deployment)Built-in packaging for standalone executables and bundlesMobile device testing with Flet AppExtensible to wrap Flutter packages or build new Python controls
Pricing
Free
Flet is completely free to use with no hidden costs.
Reviews
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Flet FAQ
How does Flet enable cross-platform development?
Flet allows developers to build applications for web, mobile, and desktop using a single Python codebase. This eliminates the need for separate development efforts or different programming languages for each platform, supporting iOS, Android, Windows, Linux, macOS, and web.
Which teams would benefit most from using Flet?
Teams that primarily use Python and want to develop multi-platform applications without needing frontend expertise will find Flet beneficial. It's suitable for developers who wish to leverage existing Python libraries for mobile and desktop app creation.
How does Flet compare to FlutterFlow for UI development?
Flet enables UI development using pure Python and leverages Flutter to render UI widgets, offering over 150 built-in controls with Material and Cupertino design. Unlike FlutterFlow, Flet focuses on Python as the sole language for application development across all platforms.
Can Flet applications be deployed to app stores?
Yes, Flet includes built-in packaging capabilities that allow developers to create standalone executables or bundles for various platforms. This feature simplifies the process of deploying applications to respective app stores.
What kind of UI components does Flet offer?
Flet provides a rich set of over 150 built-in UI controls and services, including options for layout, navigation, dialogs, and charts. These components are rendered using Flutter, ensuring modern Material and Cupertino design principles.
Does Flet include a free tier?
Flet is free to use, meaning there is no paid plan required to access its features and build applications. This allows developers to utilize the platform without incurring costs.
How does Flet handle real-time updates during development?
Flet allows developers to test their projects on mobile devices using the Flet App, where updates are reflected in real-time as changes are made. For web applications, it supports real-time UI updates when deployed as Python web apps.
Source: flet.dev