What exactly do you reuse from my existing web app?

If you built the web app on Lovable, Claude, Bolt, v0 or AI Studio with a real backend (Supabase, Firebase, Node, Laravel, Python — anything), we reuse the database, the API layer, the auth, the billing and any third-party integrations you already have. The mobile app talks to the same endpoints the web app does. You ship a mobile app without paying to rebuild the backend twice.

What if I only vibe-coded the UI and don't have a backend yet?

Common case. We take your existing web UI as the visual and behavioural reference, design the data model and the API surface properly, build the backend and database from scratch, and then build the native app on top. The web app and the native app share the same backend from day one — no duplicate APIs, no diverging schemas.

React Native or Flutter — which one should I pick?

We default to React Native when your web app is already in React (Lovable, Bolt, v0, Claude, AI Studio all output React) because the team, the components, the validation logic and the type definitions carry across the boundary cleanly. We pick Flutter when there is existing Dart expertise on the team or when pixel-identical rendering across iOS and Android is a hard requirement. We will tell you directly which one fits your product — not which one we want to write this month.

How much code can actually be shared between the web app and the native app?

The whole backend, obviously — API, database, business logic, auth, billing. On the frontend, with React Native we typically share types, validation schemas (Zod), API client code, and a meaningful chunk of business logic and state management. UI components are different because mobile and web have different interaction patterns, but they look and feel like the same product because the design system primitives port across.

Will the mobile app feel native or will it feel like a wrapped website?

Native. React Native and Flutter render real native UI components, not HTML inside a webview. Animations run on the GPU, navigation matches platform conventions (iOS swipe-back, Android system back), and screen transitions stay under 100ms on entry-level devices. The wrap-the-website approach gets rejected by reviewers and abandoned by users — we don't ship it.

Can you handle App Store and Play Store submission?

Yes. Build configuration, signing, capabilities setup, store listing copy, screenshots, privacy declarations, and the reviewer back-and-forth when rejection happens. We've shipped enough apps to know which rejection reasons are likely for AI-built products and how to pre-empt them before submission.

What about push notifications, offline mode and OTA updates?

Push via FCM and APNs (Expo, or bare RN), with deep links into specific screens. Offline reads via SQLite or WatermelonDB with an explicit sync layer. OTA updates via EAS Update or CodePush so we can ship JavaScript fixes the same day without waiting for a store review. Native module changes still go through a real store update — we are deliberate about which change goes which path.

How long does a typical web-to-native conversion take?

When the backend already exists and is healthy, 8–12 weeks from kickoff to both stores. When we need to build or harden the backend first, 12–18 weeks. Faster than this is usually a wrap-the-website project that gets rejected; slower than this usually means scope has crept past 'native version of the web product'.

Do we own the source code, the backend infrastructure and the App Store listings?

Yes. Code lands in your GitHub. Backend deploys to your cloud accounts. App Store and Play Store listings are on your developer accounts, not ours. We do not hold the keys to your product — that's a non-negotiable principle on every engagement.

Can you also keep building the web app while you're shipping the native app?

Yes — that's how most of our engagements run. The same team works on the shared backend and on both frontends, so a feature shipped on the web is on the roadmap for the native app the same sprint, not three months later when someone remembers.

■ web app to native mobile app

Turn your Lovable, Claude or Bolt web app into a real native mobile app

You vibe-coded a web product. Now you want it on the App Store and Play Store. We reuse your existing backend, database and APIs and rebuild the frontend in React Native or Flutter — so you ship a real native app, not a wrapped website. Already done for GravityOne and Style Cypher.

Talk to an engineer See mobile work

Converting an AI-built web app into a native iOS and Android mobile app

■ Who this is for

A good fit if you've already built a web app and now need mobile

Founders who built a working web app on Lovable, Claude, Bolt, v0 or AI Studio and now need iOS and Android
Teams with a production web product whose backend, database and APIs already exist and should be reused
Vibe-coded UIs without a backend yet — we'll build the API layer and the native app together
Companies that want one team handling backend continuity and the mobile frontend, not two
Products where the mobile app needs to share business logic, auth, billing and data with the web app

■ Probably not a fit

We'll be honest if a native mobile app is the wrong call

Marketing-only websites that don't need a mobile app at all
Native-only apps that depend on heavy platform-specific UX or AR / VR
Hourly fix-ups on an existing native codebase under $5k of scope
Wrap-the-website-in-a-webview projects — we don't ship those, users notice within a week

■ Two paths from web to native

We pick the path based on how much of your web app already works

Most projects we take on fall into one of two shapes. The work and the timeline change meaningfully between them. We'll tell you which path you're on in the first call.

Path A · 8–12 weeks

Web app with a working backend, database and APIs

You built a real web product on Lovable, Claude, Bolt, v0 or AI Studio. There's a Supabase / Firebase / Postgres / MySQL database, an auth layer, API endpoints that already serve the web app, and probably a billing integration. We reuse all of it.

Same database, same APIs, same auth — no duplication
Shared types, validation schemas and API client across web and native
React Native picks up business logic from the React web app cleanly
Light backend hardening: rate limits, RLS audit, mobile-specific endpoints

Path B · 12–18 weeks

Web app is UI-only — backend, database and APIs don't exist yet

The vibe-coded version got you a beautiful frontend and a clear product idea — but the data lives in fake state, the login is fake, and the payments never went live. We take the UI as the product reference and build the backend, the database and the API surface properly, then build the native app on top.

Data model, schema and migrations designed from scratch — not retrofitted
Production API in Node, Supabase or Laravel — shared by web and native
Auth, billing, file uploads, search and notifications wired up properly
Web frontend wired into the real backend in parallel with the native build

GravityOne

Case Study · Web to Native

100%

Backend reused from web

iOS + Android

One React Native codebase

Stack

React Native · TypeScript · Supabase · Node.js

■ Real work

GravityOne — Lovable web app, shipped to both stores in React Native

GravityOne came to us with a working web product built on Lovable. The database, the auth layer and the API endpoints were already in production and serving real users on the web. The question was how to get the same product into the App Store and Play Store without rebuilding everything from scratch — and without ending up with two diverging codebases six months later.

We reused the entire backend. The same Supabase database, the same RLS policies, the same API endpoints. We extracted the validation schemas and the API client into a shared TypeScript package so the React web app and the new React Native app could import from the same source. New features ship to both surfaces in the same sprint because the business logic only lives in one place.

■ React Native vs Flutter

We do both. We don't recommend both for the same product.

Lovable, Claude, Bolt, v0 and AI Studio all output React. That tilts the default toward React Native because the language, the type system and the component model carry across. Flutter is a great alternative — but the case for it has to be specific. Here's how we choose.

React Native — default for AI-built web apps

Same language as your existing React web app, same component model, same type definitions. The validation schemas, the API client and a meaningful chunk of business logic move across the boundary without rewriting. Expo's bare workflow gives us EAS for builds and OTA plus full access to native modules when we need them.

Flutter — when the case for Dart is real

Flutter wins when you already have Dart expertise, when pixel-identical rendering across platforms is a hard requirement, or when the design language depends on highly custom canvas-style UI. We've shipped Flutter when it was the right call. Most AI-built web products are not in that category — React Native carries more of the work across.

Shared backend — the same API for web and native

Both clients hit the same endpoints. The mobile app does not get its own duplicate API surface that drifts from the web one over six months. We add mobile-specific endpoints only where the payload genuinely needs to differ (lighter list responses, push token registration, app-version gates).

Auth, billing and storage — reused as-is

Supabase Auth, Firebase Auth, Clerk, Auth0 — whatever the web app uses, the native app uses too. Stripe billing reused via the same customer IDs. File uploads reuse the same buckets. Users don't get a second account because they downloaded the app — they sign in and pick up where they left off.

State, storage, offline — boring on purpose

Zustand or Redux Toolkit for state. React Query for server state. SQLite via WatermelonDB for anything that needs to be readable offline. We avoid clever sync-by-magic libraries — the conflict logic always becomes a debugging tax later. Explicit sync that the next engineer can read and reason about ages well.

Builds, OTA, distribution — Expo EAS or CodePush

EAS for builds, signing and submission to both stores from a single config. EAS Update or CodePush for OTA updates of the JavaScript bundle so a typo fix ships the same day instead of waiting on store review. Native module changes still need a real store update — we are deliberate about which change goes which path.

■ Real work

Style Cypher — vibe-coded UI, full backend and native app built around it

Style Cypher came to us with a beautiful AI-built web frontend and almost nothing behind it. The product idea was clear from the UI — a fashion and style discovery experience — but the data was mocked, the login was a stub, and there was no API layer. They wanted the same product on iOS and Android, and they wanted the web app to actually start working too.

We took the vibe-coded UI as the product reference and designed the data model around it. PostgreSQL schema, migrations, an authenticated REST API, image storage, search, and the AI-powered recommendation surface that the product was promising. The same API now serves both the rebuilt web app and the new React Native app — one backend, two clients, no duplication.

Style Cypher

Case Study · UI-only to Full Stack

0 → 1

Backend built from scratch

1 API

Shared by web and native

Stack

React Native · Node.js · PostgreSQL · TypeScript

■ How we work

From a vibe-coded web app to live on both stores

Code and backend audit

One week. We read the existing Lovable / Claude / Bolt / v0 / AI Studio codebase end to end, document the data model, the API surface, the auth, the billing and the third-party integrations. Output: a written architecture, what we can reuse, and what needs hardening.

Path A or Path B decision

If the backend exists and is healthy, we go straight to mobile architecture. If the backend is UI-only state, we plan the backend build in parallel. Either way, the decision is documented before we start writing production code.

Shared foundations

Shared TypeScript package for types and validation. Shared API client. Shared design tokens. The native app does not duplicate logic that already exists on the web — it imports it. Mobile-specific endpoints get added to the same API, not a parallel one.

Feature sprints

Two-week sprints. Internal builds shared via TestFlight and Firebase App Distribution after every sprint. Scope changes get re-baselined at sprint boundaries, not mid-sprint. The web app and the native app stay in lockstep on shared business logic.

Pre-launch hardening

Performance pass on real low-end Android devices, offline scenarios tested deliberately, push notification flows verified end to end, store listing copy and screenshots prepared, privacy declarations filled in, App Tracking Transparency wired up where needed. Crash reporting and analytics live before submission.

Submission and 30-day stability watch

We submit to both stores, handle reviewer back-and-forth, and stay on full availability for the first month after launch. Real users surface issues no internal test catches. Then we move into a standard maintenance and feature retainer covering web and native together.

■ Honest comparison

Appycodes vs your other options for getting a web app onto mobile

	Wrap-in-WebView	Rebuild from scratch	Freelance RN dev	Appycodes
Reuses your existing backend	Yes	No — full rebuild	Sometimes	Yes
Feels native on iOS / Android	No	Yes	Depends	Yes
Survives App Store review	Often rejected	Yes	Depends	Yes
Time to both stores	2-4 weeks	6-12 months	Variable	8-18 weeks
Web and native stay in lockstep	By accident	Diverges fast	No	Yes — shared logic
Continuity if someone leaves	Low risk (small surface)	High risk	High risk	Built in
Owns code, backend and IP	Yes	Yes	Mixed	Yes — fully

Reuses your existing backend

Wrap-in-WebViewYes
Rebuild from scratchNo — full rebuild
Freelance RN devSometimes
AppycodesYes

Feels native on iOS / Android

Wrap-in-WebViewNo
Rebuild from scratchYes
Freelance RN devDepends
AppycodesYes

Survives App Store review

Wrap-in-WebViewOften rejected
Rebuild from scratchYes
Freelance RN devDepends
AppycodesYes

Time to both stores

Wrap-in-WebView2-4 weeks
Rebuild from scratch6-12 months
Freelance RN devVariable
Appycodes8-18 weeks

Web and native stay in lockstep

Wrap-in-WebViewBy accident
Rebuild from scratchDiverges fast
Freelance RN devNo
AppycodesYes — shared logic

Continuity if someone leaves

Wrap-in-WebViewLow risk (small surface)
Rebuild from scratchHigh risk
Freelance RN devHigh risk
AppycodesBuilt in

Owns code, backend and IP

Wrap-in-WebViewYes
Rebuild from scratchYes
Freelance RN devMixed
AppycodesYes — fully

None of these options is universally wrong. A WebView wrapper is fine for an internal-only tool with five users. A full rebuild is right when the web app has been a throwaway. We tend to be the right call when you want the native version of your existing product shipped quickly, with the backend reused, and with one team holding the line on web-native parity afterwards.

■ Questions we get

Real questions from real founders

If yours is not here, ask us directly.

■ Related research

Background reading on what AI-built code costs once it hits production

Three of our 2026 research reports back the choices behind this service — the production cost of AI prototypes, the App Store rejection patterns we plan around, and how OTA updates affect post-launch velocity.

About the author

Ritesh — Founding Partner, Appycodes

Ritesh leads engineering at Appycodes and has spent the last decade shipping web and native mobile products for funded startups across the UK, US, India and Australia. His focus is on production engineering for AI-built products — taking Lovable, Claude, Bolt and v0 codebases past the prototype boundary and onto real users' phones.

■ Other services