---
id: flet
version: "0.86.5"
license: Apache-2.0
license_treatment: permissive
maintenance: active
---

# flet — Flet for Python - easily build interactive multi-platform apps in Python

License: permissive · Maintenance: active · Downloads: 480.2K/mo

## What it is and what it does

Flet is a Python framework that lets you write cross-platform applications—for iOS, Android, Windows, Linux, macOS, and web—all in Python without needing to learn Dart, Swift, Kotlin, HTML, or JavaScript. It wraps Flutter's rendering engine and provides a Python API to Material and Cupertino UI controls, layout primitives, dialogs, and charts. You write a single codebase and Flet handles compilation and packaging for each target platform.

The framework is designed for developers who want to ship native-looking apps quickly without frontend expertise. It includes built-in packaging tools to generate standalone executables and app bundles, supports real-time testing on mobile devices via the Flet App, and can deploy web apps either as WebAssembly-based client-side apps or as server-side Python web applications with live UI updates. It depends on httpx, oauthlib, msgpack, repath, and typing-extensions for HTTP, authentication, serialization, and utility functions.

Use it for:

- Build a cross-platform desktop application (Windows, macOS, Linux) from a single Python codebase without Electron
- Create a mobile app for iOS and Android that you can test on your own device and deploy to app stores
- Develop a web application that runs in modern browsers using WebAssembly, with no server infrastructure required
- Prototype a data-driven dashboard or tool that needs to run on multiple platforms with consistent UI
- Wrap Python libraries like numpy, pandas, or opencv in a native GUI for distribution to end users

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Flet is a Python framework for building cross-platform mobile, desktop, and web applications without requiring frontend development experience or knowledge of platform-specific languages.

Yes, if you want to build cross-platform apps in pure Python without learning frontend languages or frameworks. The project is actively maintained, has no known vulnerabilities, and offers a permissive license. Install friction is low. The main gotcha is the Python 3.10 requirement and the need for platform-specific tooling to package for mobile and desktop—not a blocker for web or desktop development on your own machine, but worth planning for if you intend to ship to app stores.

## Install

pip install flet
uv add flet
poetry add flet

## Installing flet

Before you install: Installation is straightforward with a pure-Python wheel. The package has low install friction and active maintenance—the repository shows recent commits and the project released within the last two weeks.

License in practice: Licensed under Apache-2.0 (permissive), so you can use Flet in commercial and private projects without restriction, though you must include a copy of the license.

Quickstart:

pip install 'flet[all]'

import flet as ft

def main(page: ft.Page):
    page.add(ft.Text("Hello, Flet!"))

ft.run(main)

Requires Python 3.10 or later. Desktop and mobile builds require platform-specific tooling; web deployment uses WebAssembly.

Verify before relying:

- Whether the 150+ built-in controls and 50+ Python packages for iOS/Android mentioned in the description are current as of version 0.86.5
- Performance characteristics and limitations when running complex apps via WebAssembly on web
- Maturity and stability of iOS/Android packaging relative to desktop platforms

## Package facts

- License: Apache-2.0 (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 480.2K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

cross-platform app framework python, build mobile apps python, desktop gui python no javascript, python web app framework, flutter python wrapper, multi-platform ui python, native app development python, cross-platform, gui-framework, flutter-python

[View on SkillFed](https://skillfed.io/packages/flet) · [View on PyPI](https://pypi.org/project/flet/)