React Native App Development for B2B and B2C Apps

One React Native codebase. iOS and Android in lockstep. Push, offline, OTA updates, App Store and Play Store submission handled. Built by engineers who ship production B2B and B2C apps, not template apps.

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What we build

One codebase, iOS and Android
Push notifications and deep links
Offline support and sync
Over-the-air (OTA) updates
Native modules (Swift / Kotlin)
App Store and Play Store submission

Who this is for

Who our React Native app development service is for

B2B and B2C companies adding a mobile app to an existing web product
Founders launching a mobile-first product who want one codebase, two stores
Product teams that need senior React Native engineers without hiring
Existing apps that need a rebuild, performance pass, or migration to RN
Teams shipping AI-powered mobile experiences (chat, copilots, voice, vision)

Probably not a fit

We'll be honest if React Native is the wrong call

Pure native iOS-only or Android-only apps with heavy platform-specific UX
Games, AR/VR experiences, or anything that needs the metal of the device
Marketing-only apps that should really just be a website
Hourly fixes on someone else's neglected RN codebase under $5k

Real work

React Native apps in production today

Case Study · Native Mobile App

$600M

Parent company valuation

Bills & GST

Native app shipped

Stack

React Native · TypeScript · Node.js

Featured engagement

React Native app development for finance and business apps

Khatabook is one of India's most-used SMB finance brands, valued at over $600M. As they expanded the product line beyond the flagship app, our team partnered with their core engineering on the native build of Bills & GST, a separate mobile app focused on GST-compliant invoicing and tax workflows for small businesses.

We did not work on the main Khatabook app. Bills & GST was a distinct product surface that needed its own engineering team and its own architectural decisions. We embedded with the Khatabook core team, contributed across the React Native build, the supporting Node services, and the GST-engine integrations that have to behave precisely under audit conditions.

Two engineering choices held up across the project: keeping the React Native bridge thin enough that screens were ready in under 200ms even on entry-level Android devices, and treating the network as the most likely thing to fail. SMB users in tier 2 and tier 3 cities open the app on patchy connections; an app that assumes a perfect connection loses them in the first week.

Case Study · Social & Events

500K+

Lines of code shipped

70%

Traffic growth

Stack

React · React Native · Node.js · MongoDB

React Native development for social and community apps

Bloc is a social and events platform with a mobile-first product surface: discovery, RSVPs, group messaging, and the real-time interactions that make a community app feel alive. The challenge was not any single feature; it was keeping the app responsive while real-time updates, social feeds, and notifications all competed for the main thread.

We shipped over 500,000 lines of code into the Bloc stack across React, React Native, and Node, including the messaging layer, the real-time presence system, and the feed ranking surfaces. Traffic on the platform grew 70% during our engagement, and the app held up because the architecture had been designed for it from the second sprint, not patched together later.

The single best decision was investing early in a tested, predictable network layer. Every API response shape was typed and validated; every retry, timeout, and offline fallback was written once and reused everywhere. When the team needed to add a new feature, it was almost never the network part that slowed them down.

Stack we'd pick today

Choosing the right mobile app stack for your product

We are not stack agnostic. After a decade of shipping mobile apps, we have strong views on which platform earns its keep for which product. Here's what we reach for and why. We will tell you directly if your product is in the small minority that needs something else.

React Native, default for B2B and B2C apps

One codebase, two stores, deep React talent pool, and shared business logic with your web app. We use Expo's bare workflow when we want EAS for builds and OTA but full access to native modules. Hot reload and TypeScript across the boundary make sprint velocity meaningfully higher than native.

Flutter, when Dart is already a strength

Flutter is a great option if you already have Dart on the team or if your design needs pixel-identical rendering across platforms. The talent pool is shallower than React Native and the integration story with React-based web is weaker, so we rarely default to it for B2B and B2C apps.

Native iOS / Android, when the platform is the product

If the app needs heavy AR, deep system integration, performance-critical hardware access, or platform-specific UX patterns that users expect, native wins. We've shipped native when it was the right call. Most B2B and B2C apps are not in that category.

State and data, Zustand or Redux Toolkit + React Query

Zustand for most products: it's small, fast, and obvious. Redux Toolkit when the team already knows it and the data model is genuinely complex. React Query handles server state, caching, and the invalidation logic you would otherwise rebuild badly. We avoid bespoke state libraries.

Storage and offline, SQLite + WatermelonDB

AsyncStorage for tiny preferences. SQLite via WatermelonDB for anything resembling a real local dataset. We avoid syncing-by-magic libraries: the conflict logic always becomes a debugging tax later. Explicit sync that you can read and reason about ages much better.

Builds, OTA, distribution, Expo EAS + CodePush

EAS for builds, signing, and submission to both stores from a single config. CodePush or EAS Update for OTA updates of the JavaScript bundle. Native module changes still need a real store update: we are deliberate about which changes go which path.

What we ship to

The React Native production targets we hold ourselves to

Mobile is unforgiving. Users uninstall an app that takes three seconds to open. App Store review rejects a build that crashes on iPad. These are the numerical targets we treat as non-negotiable on every React Native build, measured on the lowest-spec device the product is meant to support, not on a flagship.

Target	Our budget	Why it matters
iOS minimum version	iOS 15	Covers 97%+ of active iPhones; below 15 forces costly polyfills.
Android minimum API level	API 24 (Android 7)	Below this kills RN performance and breaks RN 0.72+ dependencies.
Cold start on low-end Android	under 2.5s	Measured on a Samsung A14, the 75th-percentile entry-level device in our markets.
First screen interactive	under 1.5s after cold start	Auth-aware splash, no blocking network on first paint.
OTA bundle size budget	under 4 MB gzipped	Keeps EAS Update / CodePush adoption above 95% in 24 hours.
Crash-free sessions	above 99.6%	Measured weekly in Sentry / Crashlytics across both platforms.
Push delivery (FCM and APNs)	above 95% within 60s	Lost notifications kill retention faster than most product bugs.
First store submission pass-rate	First-try approval	We pre-empt the rejection reasons we know reviewers look for.

We monitor these from the first internal build, not the day before submission. The fastest way to ship a slow app is to defer measurement until the end.

How we work

From kickoff to live on both stores, in six steps

Discovery sprint

One week. We map the product, the user journeys that matter on mobile, and the platform-specific behaviour you can't ignore (notifications, deep links, app store policy, biometrics). Output: a written architecture and a concrete plan for the first 90 days.

Architecture and stack lock

We choose the stack, design the navigation tree, define the offline and sync model, and confirm the OTA update strategy before writing production code. Decisions get documented so the next engineer to join is not guessing.

Sprint zero

Auth, deep linking, the navigation shell, the design system primitives, CI builds for both platforms, and a deployable internal build. By the end of sprint zero you can install the app on a real device.

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.

Pre-launch hardening

Performance pass on real low-end devices, offline scenarios tested deliberately, push notification flows verified end to end, store listing copy and screenshots prepared, privacy declarations filled in. We launch with monitoring and crash reporting already wired up.

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 that no internal test catches. Then we move into the standard maintenance and feature retainer if you want us to keep going.

Honest comparison

Why choose Appycodes for React Native app development

Capability	Freelancer	Local agency	In-house hire	Appycodes
Senior RN engineers	Maybe	Mixed	Yes, once hired	Yes
Time to start	1-2 weeks	2-4 weeks	8-16 weeks	1-2 weeks
Both iOS and Android coverage	Often partial	Yes	Depends on hire	Yes
App store submission handled	Rarely	Yes	Yes	Yes
Continuity if someone leaves	High risk	Medium	Yes	Built in
Owns code and IP	Mixed	Yes	Yes	Yes, fully
Bug response after launch	When available	Business hours	Yes	Yes

None of these options is universally right. A senior RN freelancer is fine for a focused two-week task. An in-house hire is the right move when you have time and certainty. We tend to be the right call when you need senior delivery quickly, with continuity, and someone who has actually been through a few app store reviews before.

Questions we get

Real questions from real founders

If yours isn't here, ask us directly.

React Native gives you one codebase that ships to both stores, hires from a deep React talent pool, and integrates cleanly with the same backend and design system as your web product. Flutter is a fine choice if you already have Dart expertise. Native is right when the app needs deep platform-specific UX or hardware integration. We pick by product fit, not preference.

Yes. We start with a code, performance, and dependency audit. We document what's there, identify the riskiest parts, and propose a path forward, usually stabilise first, then modernise in focused passes. We do not rewrite for the sake of rewriting.

Yes. Build configuration, signing, capabilities setup, store listing copy, screenshots, privacy declarations, and the review back-and-forth when reviewers push back. We've shipped enough apps to know which rejections happen and how to pre-empt them.

Firebase Cloud Messaging or APNs depending on the product, with a clean abstraction so you can switch later. We wire up segmentation, scheduling, and deep links into specific screens. Notifications that just say 'open the app' are a waste of attention budget.

Most B2B and B2C apps need at least read-while-offline. We use SQLite or WatermelonDB for local persistence, with an explicit sync layer that handles conflicts predictably rather than hoping last-write-wins is good enough. Real offline-first apps are a separate conversation: we'll tell you when that's overkill.

Yes, Expo OTA or CodePush, depending on whether you're on Expo's managed workflow or bare React Native. We are deliberate about what goes through OTA vs a real store update. JavaScript bundles yes; anything that touches native modules, no.

Yes. We reach for native modules when JavaScript can't get there: Bluetooth, biometrics, hardware sensors, deep OS integrations, performance-critical paths. Most products don't need much of this, but when they do, we're not stuck.

Same way as on web, we treat the model as fallible. Streaming responses, optimistic UI, fallback states when the model is slow or wrong, and per-user rate limits to keep costs predictable. We integrate OpenAI, Anthropic, on-device models, and voice or vision SDKs depending on the product.

Yes. Most B2B and B2C apps share their backend with a web product, so we work into the existing API. When the backend is new, we build it: Node or Laravel, PostgreSQL, Stripe, secure auth. The mobile app is rarely the whole product.

Two-week sprints with re-baselining at sprint boundaries, not mid-sprint. Each change has a written cost in time and money before it lands in the plan. App store review timelines are a separate variable: we plan around them rather than promising what we can't control.

Ritesh · Founding Partner, Appycodes

Ritesh leads engineering at Appycodes and has spent the last decade shipping mobile and web products for funded startups across the UK, US, India and Australia, including Khatabook, Bloc, CREOATE, and others. His focus is on production engineering: the unglamorous decisions that make a mobile app feel fast on real devices and easy to change six months after launch.

React Native

Have a mobile app that's actually engineering? Let's talk.

Talk to an engineer hello@appycodes.com