React-native

How to Hire React Native Developers Who Can Actually Ship (Not Just Pass a Coding Test)

A candidate aced our JavaScript assessment. Perfect score on algorithms. Clean React component design. Strong TypeScript. We hired them. Three months later, they could not debug a native crash, had n

The React Native Animation Performance Secret: Why Your Animations Jank and How Reanimated 3 Fixes It

Your list scrolls smoothly — until a background API call completes and triggers a state update. Suddenly, the scroll animation drops from 60fps to 23fps for 200 milliseconds. Your users feel it. Your

React Native New Architecture in 2026: Is It Finally Ready for Production?

React Native's New Architecture — Fabric renderer, TurboModules, JSI, and Codegen — has been in development since 2018. For years, the community response was justified skepticism: impressive benchmar

We Shipped a React Native App to 1.2 Million Users. Here Are the 7 Things We Wish We Knew on Day One.

At 1,000 users, React Native felt effortless. At 100,000 users, cracks appeared. At 1.2 million users, everything we assumed about mobile development was tested. Seven lessons stood out — each one le

Your React Native App Has a Memory Leak. Here's How to Find It in 15 Minutes.

Your app works perfectly for the first 10 minutes. Then it starts dropping frames. Then animations stutter. Then it crashes. The crash report says "out of memory" but your code does not load large da

How to Build Native Modules in React Native Without Losing Your Mind (A Step-by-Step Guide)

You need a feature that requires native platform access. You search npm. Nothing exists, or what exists is unmaintained, two major versions behind, and last updated 18 months ago. You need to write a

The Hermes Engine Migration Nobody Tells You About: 3 Breaking Changes That Will Crash Your App

Hermes reduces React Native app startup time by 30-50% and memory usage by 20-30%. Those numbers are real. What the migration guides do not emphasize is that Hermes implements a different JavaScript

React Native vs. Flutter in 2026: The Honest Comparison Nobody Wants to Publish

We have shipped production apps in both React Native and Flutter. We have strong opinions about each. And most published comparisons are useless because they are written by advocates, not practitione

Our React Native CI/CD Pipeline Deploys to Both App Stores in 18 Minutes. Here's Every Step.

Every Thursday, our lead mobile developer spent 3 hours building, signing, and submitting our React Native app to the App Store and Play Store. That is 156 hours per year — nearly a full month of eng

Stop Using Redux in React Native. Here's What Replaced It (and Why Your Team Will Ship Faster)

Our React Native app had 4,200 lines of Redux code: actions, reducers, selectors, middleware, thunks, and the type definitions connecting them all. We migrated to Zustand and React Query in two weeks

React Native Offline-First Architecture: The Pattern That Saved Our App When 38% of Users Had Unreliable Connections

Our analytics showed 38% of active users experienced connectivity interruptions during typical sessions. Our app handled this by showing a spinner and waiting. Users handled this by closing the app a

How We Scaled a React Native Codebase to 200,000 Lines Without Losing Developer Velocity

At 20,000 lines, our React Native app was a joy to work on. At 80,000 lines, builds took 4 minutes and developers stepped on each other's changes daily. At 120,000 lines, we stopped and restructured.

The React Native Debugging Technique That Senior Engineers Use (and Tutorials Never Teach)

A junior developer on our team spent two days debugging a crash that only occurred on Android 12 devices when the app returned from background after more than 30 minutes. Console.log showed nothing.

Expo or Bare Workflow? The Decision That Silently Determines Your React Native App's Ceiling

A startup CTO chose Expo because it promised faster development. Eight months later, his team spent three weeks ejecting to bare workflow because a critical feature required a native module Expo did

Why We Rewrote Our React Native Bridge Layer and Cut App Startup Time by 62%

Our React Native app took 4.1 seconds to cold start on a mid-range Android device. Users were abandoning before the first screen rendered. The culprit was not our JavaScript bundle. It was the bridge