UI Kitten is a free, MIT-licensed React Native UI library built on the Eva Design System that gives mobile developers a set of general-purpose components with light, dark, and custom themes that can be switched at runtime without reloading the application.

What it is

UI Kitten is a component library for React Native, written in TypeScript and published to the npm ecosystem, where it is distributed as the react-native-ui-kitten package. It provides a set of general-purpose UI components styled in a consistent way, all following the Eva Design System specification. The library lives in the same family as Akveo's other Eva-related projects, including the Eva Icons set and the Kitten Tricks starter kit, and it is documented through a dedicated documentation site linked from the repository homepage.

The concrete problem it solves is the cost of assembling and maintaining a coherent mobile interface from scratch. Rather than hand-rolling a button, input, and layout set and then rewriting it whenever the product needs a second visual identity, a team adopts UI Kitten and gets a tested component set plus a theming layer. Because themes can be changed at runtime with no need to reload the application, the same codebase can serve multiple brands or a live light/dark switch without a restart. It carries an MIT licence and is described by its maintainers as 100% free and open source.

Key capabilities

• 25+ general-purpose components designed and tested for React Native applications.
• A theming system with Light and modern Dark themes, plus support for creating custom themes.
• Runtime theme switching, so themes can be changed without reloading the application.
• SVG Eva Icons support, providing 480+ general-purpose icons.
• Eva Design System support, so interfaces built from the basic components follow Eva specifications.
• Two project templates, @ui-kitten/template-js and @ui-kitten/template-ts, for initialising a new React Native app.
• The Kitten Tricks starter kit, offering over 40 screens in dark and light themes with customizable layouts.

Who uses it and how

• React Native teams building multi-brand or white-label mobile applications, where the runtime theming system removes the need for separate builds per visual identity.
• TypeScript teams, who can bootstrap with @ui-kitten/template-ts and keep typed components from the first commit.
• Developers who want a running app quickly, using Kitten Tricks to start from over 40 pre-built dark and light screens and adding blocks as needed.
• Teams that need commercial assistance beyond the open-source library, which Akveo offers through its React Native services.

Getting started

The README's Quick Start initialises a new application with npx react-native init MyApp --template @ui-kitten/template-js, or --template @ui-kitten/template-ts for a TypeScript setup, which configures a React Native app with UI Kitten already wired in. Further options are documented on the project's documentation site.

How it compares

The facts provided do not name any comparable alternative UI library, so no head-to-head comparison is possible here; within its own ecosystem UI Kitten sits alongside Eva Icons and the Kitten Tricks starter kit, all from Akveo and all oriented around the Eva Design System. Akveo also points to UI Bakery for building an admin panel for a mobile app, which is a separate product rather than a substitute for the component library. On the evidence available, it stands alone in this registry.

When to use it — and when not to

There is no server-side infrastructure to operate here: as a client-side React Native library it requires no database, object storage, or SMTP service, so the operational burden is limited to the normal React Native toolchain and keeping the dependency current. Teams already committed to a different design system, or those who need platform-native primitives rather than an Eva-styled component set, should look elsewhere. The honest caveats are that the repository shows 134 open issues, the README excerpt is brief and gives no version or release cadence, and professional support is a paid Akveo service even though the code itself is MIT-licensed.

npx react-native init MyApp --template @ui-kitten/template-js

npx react-native init MyApp --template @ui-kitten/template-ts