RNBlocks vs v0
Both tools generate UI from a prompt. The difference is the target platform. v0 generates for the web browser. RNBlocks generates for native iOS and Android.
What v0 generates
v0 by Vercel generates React components styled with Tailwind CSS and shadcn/ui, designed to run in a web browser. The output is web-first: it uses CSS, HTML semantics, and browser APIs. When viewed on a phone, it runs in a mobile browser as a web page.
v0 is an excellent tool for building web product UI quickly, landing pages, dashboards, admin interfaces, and web app screens.
What RNBlocks generates
RNBlocks generates TypeScript React Native components using Expo SDK and native styling via StyleSheet.create(). The output runs natively on iOS and Android, not in a web view. Navigation uses React Navigation stack and tab navigators. Animations use react-native-reanimated. Haptics use expo-haptics.
A user opening the prototype in Expo Go on their phone taps through screens, feels native transitions, and experiences mobile-first UX patterns. It does not look like a website on a phone screen.
Side by side
| v0 | RNBlocks | |
|---|---|---|
| Platform target | Web (browser) | Native mobile (iOS and Android) |
| Output language | React + Tailwind CSS | TypeScript React Native |
| Runs natively on phone | No (web view) | Yes, via Expo Go |
| Mobile UX patterns | Limited, web-first | Built-in, mobile-first |
| Navigation | Web routing (URL-based) | Native stack, tab, drawer |
| Haptics and gestures | No | Yes |
| Animations | CSS / Framer Motion | react-native-reanimated |
| Multi-screen app flow | No | Yes (Studio) |
Which to use
If the product is a web app, v0 is an excellent choice. It generates high-quality web UI quickly, with a polished component library and immediate preview in the browser.
If the product is a mobile app for iOS or Android, v0 is the wrong tool. Web components do not translate to native mobile behavior. RNBlocks generates the correct output for the platform: native navigation, native animations, and real mobile UX patterns.