Flet vs Kivy

Side-by-side — pricing, strengths, tradeoffs, and fit.

Flet

Build modern cross-platform apps in pure Python.

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

Build modern cross-platform apps in pure Python.

One-liner

Create NUI applications for multiple platforms with Kivy.

Maturity

Established

Maturity

Established

Open source

✓ Yes

Open source

✓ Yes

Pricing

Free tier

✓ Available

Open source — free to use

Free tier

✓ Available

Open source — free to use

Starts at

$0

Starts at

$0

Model

Flat rate

Model

Flat rate

Enterprise

✕ None

Enterprise

✕ None

Best for

✓ Best for

Python developers looking to build cross-platform apps with minimal effort
Teams that want a unified codebase across desktop, web, and mobile platforms

✓ 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 requiring deep customization of native UI elements on each platform
Developers who prefer using multiple languages or frameworks for different platforms

✕ 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

Cross-platform development with a single codebase
Modern UI components for desktop, web, and mobile apps
Real-time updates using WebSockets
Built-in state management

↑ 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 third-party integrations and plugins
Performance issues with complex UIs

↓ Weaknesses

Steep learning curve for non-Python developers
Performance issues on complex UIs
Limited commercial support and small community
Frequent breaking changes between versions
Full Flet profile →Full Kivy profile →