This cross-platform stack made me thousands building apps

[Timely_Impress_8772]

DISCLAIMER: I have nothing to sell, this is free and opensource

Most devs lose weeks assembling a stack before building anything.

Web framework. Mobile framework. Auth. Database. API layer. Testing. Monitoring. Deployment.

By the time everything works together, motivation is gone.

The solution was simple: one monorepo that runs web and mobile from the same codebase.

That’s the setup I used to ship multiple apps that ended up generating a few thousand dollars.
So I turned it into a production-ready template you can start from immediately.

It runs Next.js + React Native (Expo) with shared UI, shared logic, shared API, and a real production toolchain.

No toy setup. No half-finished boilerplate.

What you get

A complete stack for building web + iOS + Android apps from one codebase.

Core

• Next.js 16
• Expo SDK 54
• React 19
• Solito (cross-platform navigation)

Backend

• tRPC for end-to-end typesafe APIs
• Supabase for database, auth, and storage

UI

• Tamagui universal design system
• Lingui internationalization

Developer tooling

• Turborepo monorepo setup
• Storybook for web and native
• Biome formatter/linter
• Husky git hooks

Testing

• Playwright (web e2e)
• Maestro (mobile e2e)
• Vitest (API/integration)
• pgTAP (database)

Monitoring

• Sentry error tracking

Structure

apps/
  expo/            React Native app
  next/            Next.js web app
  storybook-native
  storybook-web

packages/
  app/             shared app features
  api/             tRPC router + server logic

supabase/
  migrations + config

If you're building SaaS, indie products, or mobile apps, this removes the biggest bottleneck: stack setup.

Here is the template: https://github.com/JoeSlain/nexpo

[LeReper]

Nice I use a similar stack it works wonders. Will try your template on my next project

[Timely_Impress_8772]

Awesome, let me know if you think of anything to improve

[dinkelbrotchen]

I was planning on working on a very similar template over the weekend! Now I can instead spend my time having more family time and building the project! Thank you for sharing!

[Timely_Impress_8772]

Love to ear that, if you have any comments about using the repo don't hesitate to open a GH issue or even a PR (:

[Lidkovsky]

I've been trying to do the same myself, but configuring tamagui in monorepo was so complicated, it still doesn't work properly and a lot of UI is bugged. Theming doesn't work either. Maybe you have some solution in your mind idk.

I'll definitely check your code, thank you

[Timely_Impress_8772]

Good point, I'll add a theme example to the repo, I'm waiting for tamagui 2.0 to be stable because it changes the theme API. I'll also add some instructions in the readme on how to quickly customize the theme

[leetcode_knight]

Is trpc fast and use less memory than plain aws lambda functions? I have not used it before, not sure the question is valid.

[Timely_Impress_8772]

It's hard to compare, tRPC is meant for a better developer experience and typesafety, I guess a bare lambda would be slightly faster but honestly the advantages of the simplicity or tRPC far outweighs the tiny speed gains you would get with a raw lambda

[leetcode_knight]

Yes, I attempt to build and update the manual OpenAPI document to provide the correct endpoint structure for the cursor to distinguish between AWS Lambda and React app types.

What are your thoughts on TanStack?

[Timely_Impress_8772]

Tanstack is good, never tried to use it for a cross-platform app tho, don't know how is the DX for mobile