Eight years of React Native in production. The bridge is gone — JSI, Fabric, and TurboModules make the "React Native is slow" argument obsolete. We ship Expo-managed apps with OTA updates, 60fps animations, and cold starts that rival native. One TypeScript codebase, two app stores, no excuses.
Why Entalogics for React Native
Most React Native codebases we inherit still run the legacy bridge, use FlatList for lists with 500+ items, manage state with Redux for everything, and have never shipped an OTA update. The New Architecture changes the game — but only if you actually use it properly.
JSI replaces the async JSON bridge with synchronous C++ calls. Fabric renders concurrent React. Hermes compiles bytecode ahead of time. We build on the New Architecture from commit one — not as a migration afterthought.
Expo SDK 55 gives you full native module access, EAS Build in the cloud, and OTA updates — without ejecting. We go bare only when a native integration genuinely demands it. Most apps never need to.
TanStack Query for server data. Zustand for local UI state. MMKV for persisted preferences. Redux only when an existing codebase already depends on it. Less global state, fewer re-renders.
Zod-validated API responses. Typed navigation with Expo Router. Typed design tokens. When the backend changes a field, the app fails to compile — not to render.
When React Native, when not
React Native is the fastest path to two app stores from one TypeScript codebase. It's also not native. We'll tell you on the first call if the trade-off works for your product.
PICK REACT NATIVE WHEN
CONSIDER NATIVE WHEN
WE SAY NO WHEN
What we build with React Native
The shapes of React Native work we ship most. Each built for both app stores — not a demo.
Onboarding, subscriptions, push, in-app purchases. Expo-managed with EAS Build and OTA updates live from week one.
Your web dashboard in your user's pocket. Offline-first sync, biometric auth, push tied to backend events.
Product browse, cart, checkout, order tracking. FlashList for buttery scroll on product lists with hundreds of SKUs.
Streaming chat, tool-call UIs, voice input. React Native's bridge-free architecture handles streaming state cleanly.
Barcode scanning, offline data collection, GPS tracking, photo capture. Built for teams that work outside the office.
Bridge to New Architecture, old navigation to Expo Router, class components to hooks. Screen by screen — the current app stays live while we modernise.
The playbook
React Native patterns from production apps — not Expo snack demos.
P01
EAS Build in the cloud. EAS Update for OTA patches. Config plugins for native config. Eject to bare only when a specific native module genuinely demands it.
P02
Shopify's FlashList is 10x faster for long lists. We use it everywhere a FlatList would go. Estimated item sizes, stable keys, memoised renderers.
P03
File-based routing, typed params, deep link support out of the box. A screen rename fails the build — not the QA pass.
P04
Worklet-based animations that run on the UI thread at 60fps. No JS bridge involved. Gesture Handler for native-feel swipes and drags.
P05
Real device E2E on critical flows — onboarding, purchase, deep link. CI on every PR. Catches what unit tests can't.
P06
EAS Update pushes JS fixes in minutes. Rollback if a metric degrades. App store review skipped entirely for non-native changes.
Signature case
A B2C fintech app on React Native 0.68 with the legacy bridge — 3.8s cold start, Redux store with 22 reducers, FlatList jank on transaction history, and zero OTA capability. Migrated to Expo SDK 55 with New Architecture, FlashList, and EAS Update in 9 weeks. Cold start dropped to 1.2s. First OTA fix shipped 48 hours after launch.
Before
RN 0.68 bridge · cold start 3.8s · Redux 22 reducers · FlatList jank · no OTA
After
Expo SDK 55 New Arch · cold start 1.2s · Zustand + TanStack · FlashList 60fps · EAS OTA live
Engagement shape
A typical React Native engagement. We build screen by screen — never a six-month rewrite. The current app stays live while we work.
Two senior RN engineers on the project. Bundle analysis, bridge usage audit, New Architecture compatibility check. A ranked, dollarized RFC.
Expo SDK 55 baseline, Expo Router, FlashList, one production screen end-to-end. Real cold start numbers on a physical device.
Feature by feature under feature flags. TestFlight and internal track releases weekly. Your roadmap keeps moving.
Store assets, compliance, first submission. EAS Update configured. Runbook handed to your team — or we stay on retainer.
Stack
Picked for production React Native — not Expo snack demos.
Engagement
No hourly retainer that bills for "thinking time." Pick a lane that matches your stage; everything is fixed-quote or transparently rated.
A defined product, a fixed price, a senior-only team. From RFC to app store submission in 8–14 weeks.
$15k–$30k
FIXED SCOPE
Embedded engineers in your Slack, your Linear, your standups. Senior RN engineers on the New Architecture. Pause, resize, end with 30 days' notice.
$5k / eng / mo
PER ENGINEER
A long-term partner for product orgs shipping cross-platform — architecture, performance, OTA strategy, hiring help.
custom
PROCUREMENT-FRIENDLY
Founder-direct
Thirty minutes with the founder. We'll bring a senior React Native engineer, the relevant playbook, and a candid read on whether cross-platform is the right call — or whether native gets you there better.
