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Build a cross-platform mobile app with AI, TanStack Start, oRPC, Supabase, and React Native — deployed to Cloudflare

A live cross-platform mobile app (iOS + Android + Web) with an AI-assisted development workflow, server-driven API layer, Supabase backend, and Cloudflare deployment — shipped in about 4–6 weeks.

Cby Cristian Popescu8 years of full-stack development, led a Next.js-to-TanStack-Start migration at a SaaS startup, maintains open-source React tooling
2 finished4.5/514 hours 45 min
$69

One-time payment — yours to keep forever

4.5/52 reviews2 people have finished itUpdated Jul 2026
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Included with every copy

  • Your own copy — keep it forever
  • Gets better over time — free updates included
  • Run it on web and mobile
  • Invite a partner to go through it with you — you share the same progress
  • The playbook's community — ask questions, get additions, and see how other buyers improve it, right on the step

Who it's for

Full-stack TypeScript developers who have shipped at least one React app and want to build a production mobile app without learning Swift, Kotlin, or a second backend language.

Who it's NOT for

Complete beginners to React, TypeScript, or the terminal. Also not for you if you need native Swift/Kotlin code, App Store/Play Store submission guidance, or deep CSS/styling tutorials.

About this playbook

If you're a TypeScript developer who knows React and wants to ship a real mobile app — not a tutorial to-do list — this is the stack that gets you there fastest. You'll build with TanStack Start on the server, oRPC for the type-safe API layer, Supabase for auth and database, Expo React Native for the mobile client, and deploy everything to Cloudflare Workers. Every phase uses Claude Code to accelerate — not replace — the work, from scaffolding to debugging to deployment. I've shipped five apps on this stack and the mistakes I made (misconfigured API base URL that cost a weekend, RLS policies I forgot applied differently server-side) are the warnings in here. Advanced-level. You need TypeScript and React fluency, but nothing mobile-specific coming in.

What you'll do, step by step

5 phases · 16 steps

Free preview — these steps are open to read in full before you buy.

Get the skeleton right from day one. A pnpm monorepo with clean package boundaries saves you the rewrite I did halfway through my first project — the web app, mobile app, and shared domain code each live in their own workspace package, and the type-safe API contract lives alongside domain types in the shared package, imported by both apps.

  1. 1Initialize the monorepo with pnpm workspacesFree preview
    15 min

    Create a pnpm workspace with three packages from the start: apps/web (TanStack Start), apps/mobile (Expo React Native), and packages/shared (oRPC contract and domain types). Run pnpm init at the root, create a pnpm-workspace.yaml that declares all three, and set "type": "module" in the root package.json.

    Use Claude Code to scaffold this — give it the structure and let it write the pnpm-workspace.yaml, the root tsconfig.json with project references, and each package's package.json. It takes me longer to type this paragraph than for Claude to produce all three configs.

    You're done when

    A pnpm workspace root with pnpm-workspace.yaml pointing at apps/* and packages/*, plus stubs for each package.

    Tip

    Set "private": true on the root package.json and use --filter for all workspace commands. pnpm --filter @app/web dev beats cd-ing into directories.

    Watch out

    Skip npm workspaces — pnpm's strict dependency isolation prevents the 'it works on my machine but not in CI' class of bugs. I learned this after a weekend debugging a missing peer dependency that npm had silently hoisted.

  2. 2Scaffold the TanStack Start web app with Claude CodeFree preview
    30 min

    Run pnpm create @tanstack/start@latest apps/web and pick the React + TypeScript template. Then ask Claude Code to add the Cloudflare adapter — it'll install the adapter package and update the app.config.ts to use the cloudflare adapter depending on your deployment target.

    Claude Code is your scaffolding partner throughout this playbook. After scaffolding, run pnpm --filter @app/web dev and confirm the starter page renders at localhost:3000 before moving on.

    You're done when

    A working TanStack Start app running at localhost:3000 with the Cloudflare adapter configured.

    Tip

    I scaffold every new project through Claude Code now — it knows the current API surface, so it writes the adapter config and wrangler.toml without me cross-referencing two docs pages.

    Watch out

    Pin @tanstack/react-start and the adapter to exact versions in package.json. The framework is RC and semver is stable, but CI will drift if you use ^ ranges.

Phase 3 · Build the React Native mobile app with Expo4 steps
Phase 4 · Deploy the API and web app to Cloudflare3 steps
Phase 5 · Automate, monitor, and iterate with AI3 steps
Unlock all 16 steps

Details

Estimated duration14 hours 45 min
Steps16
Estimated budget~$20-50/month (Claude Pro + optional hosting)

What you need first

A laptop with Node 20+, pnpm installed, a Cloudflare account (free tier works), a Supabase account (free tier works), and $20/month for Claude Pro (Claude Code access). Xcode or Android Studio if you want to run the mobile app on a simulator.

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What people who used it say

4.5/52 reviews

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About the creator

C

8 years of full-stack development, led a Next.js-to-TanStack-Start migration at a SaaS startup, maintains open-source React tooling

Creating since 2026

Full-stack TypeScript developer who has shipped 5+ production apps with TanStack Start since its public beta. I write the guides I wish I'd had when I was learning full-stack React — no fluff, just what actually works in production.

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