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Web & App Build5 min read

Devesh JoshiCo-founder, product

Nine years building AI platforms serving 12,000+ engineers. LLM platforms, agentic systems (MCP), and multi-model safety evaluation.

React Native vs Next.js: Architecture strategies for maximum code reuse

Sharing business logic, API clients, and state management across mobile apps and web platforms while keeping UI components native where performance demands it.

Avoiding the write-once-run-everywhere trap

Attempting to force identical UI component code across web and native mobile platforms leads to compromised UX on both. Web interfaces demand mouse hover states and fluid CSS grids, while iOS and Android require native gesture handlers and safe-area layouts.

The shared business logic monorepo model

Structure your application as a monorepo (using Turborepo or Nx). Move shared API SDKs, TanStack Query hooks, state stores (Zustand/Redux), and validation logic into a core `@workspace/core` package.

Both your Next.js web app and React Native mobile app import the exact same authentication, data fetching, and business validation functions while maintaining platform-native rendering layers.

Topic Focus & Target Concepts

React Native web code sharingmonorepo React Native Next.jscross platform app architectureTypeScript shared business logicmobile app web stack

This is the work behind our build practice — pitch-ready MVPs through to production applications, on a stack chosen for whoever maintains it after we leave.

Product and web app builds

Running into this in your own stack? Twenty minutes, no deck.

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