React Native · Mobile App Development
React Native lets startups build iOS and Android apps from a single codebase, cutting mobile development time and cost by 30-50%. With Expo, deployment and iteration are faster than ever.
React Native for Startups: React Native + Expo ships iOS + Android from one TypeScript codebase; used by Shopify, Discord, Coinbase, Microsoft Office. Typical startup MVP: $30K–$80K, 8–14 weeks. EAS Build + Update costs ~$19–$99/mo.
ZTABS builds startups with React Native — delivering production-grade solutions backed by 500+ projects and 10+ years of experience. Startups rarely have the budget to build two separate native apps. React Native shares 80-95% of code between iOS and Android, meaning one team can build for both platforms simultaneously. Get a free consultation →
500+
Projects Delivered
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Years Experience
React Native is a proven choice for startups. Our team has delivered hundreds of startups projects with React Native, and the results speak for themselves.
Startups rarely have the budget to build two separate native apps. React Native shares 80-95% of code between iOS and Android, meaning one team can build for both platforms simultaneously. The framework is backed by Meta, used by companies like Instagram, Coinbase, Shopify, and Discord. With Expo, you get over-the-air updates (push bug fixes without App Store review), a managed build service, and access to native APIs through a simple JavaScript interface.
Share 80-95% of code between iOS and Android. One developer can build and maintain both apps.
Building two native apps costs 1.8x a single app. React Native brings this down to 1.2-1.3x, saving $20,000-$80,000 on an MVP.
If your team knows React (for your web app), they can build the mobile app too. No need to hire separate iOS/Android specialists.
Push bug fixes and minor updates instantly without going through App Store review. Critical for fast-moving startups.
Building startups with React Native?
Our team has delivered hundreds of React Native projects. Talk to a senior engineer today.
Schedule a CallBefore choosing React Native for your startups project, validate that your team has production experience with it — or budget for ramp-up time. The right technology with an inexperienced team costs more than a pragmatic choice with experts.
React Native has become the go-to choice for startups because it balances developer productivity with production performance. The ecosystem maturity means fewer custom solutions and faster time-to-market.
| Layer | Tool |
|---|---|
| Framework | React Native + Expo |
| Navigation | Expo Router |
| State | Zustand / React Query |
| Backend | Supabase / Firebase |
| Push | Expo Notifications |
| CI/CD | EAS Build + EAS Submit |
A startup mobile app on React Native with Expo typically takes 8-14 weeks to build. The developer writes React components using React Native primitives (View, Text, ScrollView) that render to native iOS and Android widgets. Expo provides pre-built modules for camera, location, push notifications, biometrics, and more — no native code required.
The backend is typically Supabase or Firebase, providing auth, database, and real-time features. EAS Build compiles the app in the cloud and EAS Submit pushes it to the App Store and Play Store. Post-launch, EAS Update enables instant bug fixes without a full app review cycle.
| Alternative | Best For | Cost Signal | Biggest Gotcha |
|---|---|---|---|
| Flutter | Pixel-perfect custom UI, teams that value a single rendering pipeline, games / canvas-heavy UIs | Free framework; same store fees | Dart hiring pool is ~1/5 the size of JS/TS. Sharing code with a React web app is impossible. Some native integrations (wallet passes, certain SDKs) lag behind RN by 6–12 months. |
| Native iOS (Swift) + Native Android (Kotlin) | Best-in-class UX, heavy platform-specific features (ARKit, HealthKit, CoreML on device), enterprise teams with unlimited budget | Free frameworks; double the engineering cost | MVP cost 1.6–1.9x cross-platform. Feature parity drift between teams is a constant tax. Hiring two senior mobile engineers to run both platforms is $300K–$500K/yr loaded. |
| Expo (Managed Workflow) | Startup MVPs with no native module needs; EAS handles builds, submits, OTA updates | EAS $19/mo (Priority $99/mo) | Managed workflow hits a wall the moment you need a custom native module (niche SDK, proprietary hardware). Ejecting to a bare workflow is 1–3 engineer-weeks and loses some EAS simplifications. |
| Ionic / Capacitor | Teams with strong web skills building internal or content-forward apps | Free core; Appflow $499+/mo for CI/OTA | Scroll performance on long lists is noticeably worse than RN. Apple has been stricter about rejecting WebView-heavy apps ("spam app" clause). Not the right pick for consumer-facing polish. |
| PWA (Progressive Web App) | Content sites that want installable web with zero app store hassle | Free | iOS PWA support is still 2nd-class — no push notifications until iOS 16.4, no App Store discoverability, limited background capabilities. If your mobile app needs push + IAP, PWA is a dead end. |
Team math — one RN team vs two native teams: a senior RN/TS engineer in the US is $140K–$180K loaded. Two native seniors (iOS + Android) is $280K–$360K. For a startup at seed, that's the difference between a 12-month and 6-month runway on mobile alone. RN wins on cost by roughly $150K/yr at a single-engineer level. MVP cost: an Expo-managed RN MVP for iOS + Android is typically $30K–$80K with 1–2 devs over 8–14 weeks. Two native MVPs run $60K–$140K. The break-even in favor of native only happens when either (a) core UX is platform-specific (wallet pass, Live Activities, Dynamic Island first-class), or (b) you have >$2M annual mobile engineering budget already. Expo vs bare workflow: EAS Build + Submit + Update is $19/mo (Production) or $99/mo (Priority) — free tier gets you started. A custom CI pipeline replacing EAS (Fastlane + GitHub Actions + S3 for OTA) costs 2–4 engineer-weeks to build and ~0.1 FTE to maintain. Below $10K MRR in app revenue, EAS Priority is a clear win. IAP vs Stripe: Apple takes 15–30% and Google takes 15–30% on digital goods IAP. Stripe takes ~3%. For physical goods / services (ride-sharing, delivery, marketplace), IAP is not required — use Stripe and keep the 27 points. For digital subscriptions, you MUST use IAP inside the app per store rules; offering a web-only price outside is a common workaround (Netflix, Spotify). Small-business program and post-year-1 subscription tiers can cut Apple's take to 15%.
You pulled in react-native-firebase, react-native-iap, and some barcode library to ship. 9 months later, a breaking RN version bump (e.g. 0.73 → 0.76 New Architecture) breaks one of them. Now you wait for the maintainer, fork, or patch-package your way out. Budget 1–2 engineer-weeks every 6 months for native dep upgrades, and prefer Expo-managed modules (expo-camera, expo-notifications) when they exist — those track RN versions automatically.
App Store reviewer asks you to integrate their preferred SDK (Apple Pay Wallet pass, a specific analytics module, a regional payment provider), and that SDK needs native config. If you are in Expo managed, you have to switch to a config plugin or eject. Either is 3–10 engineer-days you did not plan for, right before a launch window. Fix: build with Expo config plugins from day one, or start in a bare workflow if you know you will need 3+ custom native deps.
Apple review time averages 24–48 hours but occasionally stretches to 7+ days, especially for first-time app reviews or when you hit a reviewer with questions about IAP, HealthKit data, or tracking disclosure. Rejections add another 1–5 day round trip. Fix: ship user-facing hotfixes via Expo Updates (OTA for JS-only changes), keep native changes in a predictable monthly cadence, and never plan a release the week before a big marketing push.
Fabric + TurboModules is default on recent RN releases. Third-party libraries written for the old bridge work via interop but throw subtle prop-type warnings, dropped events, or perf regressions. Fix: audit each third-party package for a "Fabric-ready" release before enabling New Arch, and run your E2E suite twice (old + new arch) during the migration window. Plan 2–4 engineer-weeks.
Android push notification reliability varies wildly — Xiaomi, Huawei, OPPO kill background services aggressively and FCM messages simply don't arrive on those devices until the user opens the app. Users report "the app is broken" when it's the device. Fix: integrate with each OEM's push service (HMS for Huawei in regions you care about), show users how to disable battery optimization for your app, and monitor notification delivery rates by device manufacturer.
Our senior React Native engineers have delivered 500+ projects. Get a free consultation with a technical architect.