Optimize React Native App Performance with React.memo, useCallback, and useMemo

Why React Native is the Best Choice for Cross-Platform App Development As a developer, choosing the right framework for your mobile app project can be daunting. Let's break down why React Native is a top contender: Key Advantages: 1️⃣ Faster Development: Code once, deploy everywhere! 🤯 2️⃣ Large Community: Strong support and vast resources 📚 3️⃣ Reusable Components: Build UI once, use everywhere 🧩 4️⃣ Hot Reloading: Instant feedback, faster iteration 🔥 5️⃣ Native Performance: Close-to-native experience 📱 6️⃣ Cost-Effective: One codebase, two platforms 💰 Ideal for: - Startups and enterprises - Complex, high-performance apps - Teams with React expertise #ReactNative #MobileAppDevelopment #CrossPlatform #JavaScript #typescript

July 2020. Lockdown. 2 years of React web. A client needed a mobile app. Budget for a native dev? Zero. "You know React," they said. "How different can it be?" Very. No divs, no CSS, no browser APIs. I broke things constantly. What worked: Week 1-4: Built a clone of an app I used daily. Didn't finish. Learned anyway. Week 5-8: Read RN docs top to bottom. Asked stupid questions on Discord. Week 9-12: Built the client's actual app. Shipped it. It worked. 90 days from zero to production. Not perfect — but real. The best tutorial is a deadline. #ReactNative #CareerChange #MobileDev #WebDev #Learning

A Few Simple Ways I Improve React Native App Performance When building React Native apps, performance is something I always keep an eye on. A fast and smooth app makes a huge difference in user experience. Here are a few simple practices that have helped me improve performance in my projects: 1. Avoid unnecessary re-renders Using tools like React.memo, useMemo, and useCallback can help prevent components from re-rendering when nothing actually changed. 2. Use FlatList for large lists Instead of ScrollView, I prefer FlatList when displaying long lists. It only renders the items visible on the screen, which keeps the app much smoother. 3. Be careful with inline functions Inline functions inside JSX can cause extra renders. Moving them outside the render or memoizing them helps keep things efficient. 4. Optimize images Large images can slow down the app. Compressing images and using libraries like react-native-fast-image can improve loading speed. 5. Enable Hermes Hermes has noticeably improved startup time and memory usage in many React Native apps, especially on Android. 6. Move heavy work to native code when needed If something is very CPU-intensive, sometimes it’s better to handle it with a native module instead of JavaScript. Performance optimization doesn’t have to be complicated. Small improvements like these can make a big difference in how smooth your app feels.

I improved my React Native app performance… and the results were surprising 🚀 Before 👇 • Slow screen loading • Laggy scrolling in FlatList • Too many unnecessary re-renders After optimization 👇 • Faster load time ⚡ • Smooth scrolling • Better user experience What I changed: • Optimized FlatList (keyExtractor, initialNumToRender) • Used React.memo & useCallback • Reduced unnecessary state updates Result 👉 noticeable performance boost 💯 Small changes can make a big difference If you’re facing performance issues in your React Native app, feel free to DM me 👍 #ReactNative #AppPerformance #MobileDevelopment #JavaScript #FreelanceDeveloper

🚀 Excited to share my portfolio! It showcases my work in web applications using Angular and React, and mobile app development using React Native & Ionic. I’ve built projects across web and mobile, focusing on real-world solutions. Would love your feedback! 😊 https://lnkd.in/gBikeVFM

It's rarely the framework. After watching dozens of React Native apps launch and die, here's what I've noticed: Not a single one failed because of React Native itself. They failed because of everything around it. The app that got abandoned 3 weeks after launch? The founder never talked to a single user before building it. Built something cool instead of something needed. The app with 2,000 downloads and 14 daily active users? Zero onboarding. Users opened it, got confused, and never came back. First 60 seconds matter more than your entire roadmap. The app that "almost worked"? Developer added monetization 6 months in. Users revolted. Revenue never materialized. Motivation died. Here's the pattern I keep seeing: → Overengineered architecture nobody notices → Only tested on a $1,200 phone (not the $150 Android most users actually have) → Launch day celebration, zero retention strategy → No feedback loop, so the developer just... guesses → Gives up right before things could compound The uncomfortable truth? Success in mobile apps is boring. It's talking to users before writing code. It's measuring Day 1 retention instead of download counts. It's shipping small updates consistently for months. React Native, Flutter, Swift, Kotlin — doesn't matter. An app built on a fake problem with no feedback loop dies in every framework. The tool works fine. The strategy around it is what breaks. What's the biggest challenge you've hit AFTER launching an app? #reactnative #mobiledev #buildinpublic #appdevelopment

React Native Tip: Improve App Performance with Memoization While working on a recent mobile app, I noticed unnecessary re-renders were impacting performance—especially in complex screens. One simple yet powerful solution? Memoization. ~ Use React.memo() to prevent re-rendering of components when props haven’t changed ~ Use useMemo() to optimize expensive calculations ~ Use useCallback() to avoid recreating functions on every render. @ Small optimizations like these can significantly improve app responsiveness and user experience—especially in large-scale applications. Note : Performance isn’t about big changes, it’s about smart ones. #ReactNative #MobileDevelopment #JavaScript #PerformanceOptimization #AppDevelopment #SoftwareEngineering #Developers #TechTips

Last week, I built a small side project called TheList — a minimal task manager I wanted for myself. https://lnkd.in/gB5CwidR The idea was simple: a checklist-style task app that feels fast, clean, and works even when the internet doesn’t. So I built it as a Progressive Web App (PWA). Which means you can install it directly from the browser and use it like a normal app on desktop, Android, or iOS — no app store needed. PWAs are essentially web apps designed to behave like native apps and can even work offline using technologies like service workers and browser caching. A few things I focused on while building it: • Smart Lists to organise tasks • Global Tags across lists • Rich text notes inside tasks • One-tap completion for quick checklists • Offline support — create and edit tasks without internet • Auto-sync when connection returns • 7 themes (because UI moods matter) Under the hood, it’s built with React, TypeScript, and Firebase, and a lot of the work went into making the offline experience reliable. If you try it, I’d love to hear what you think — especially whether the PWA experience feels close to a native app.

✅ A good Flutter app works. A great Flutter app is something else entirely. 👇 After shipping 6+ apps to production, here's what I've noticed separates the two 👇 ⚡ Performance isn't an afterthought Good apps load. Great apps load fast — and stay fast after 3 months of new features. The difference is usually proper state management, lazy loading, and someone caring enough to open the Flutter DevTools profiler. 🛠️ 🎨 UI feels native, not just functional Good apps use default widgets. Great apps respect platform conventions — the right fonts, the right transitions, the right spacing. Users can't explain why it feels better. They just know it does. 🧱 The codebase is readable 6 months later Good apps ship. Great apps ship AND the next developer (or future you 😅) can actually understand what's going on without a 2-hour walkthrough. Honestly? The gap between good and great isn't talent. It's just attention to the details most people skip when they're in a rush. 🙌 💬 What's the one thing you think makes a Flutter app truly great? Drop it below 👇 #Flutter #FlutterDev #MobileDevelopment #Dart #CleanCode #AppDevelopment #AndroidDev #iOSDev #MobileApps #SoftwareDevelopment

🚀 Building a Progressive Web App with Vue.js Transform your Vue.js app into a fast, installable, offline-ready Progressive Web App with this step-by-step guide using Vue CLI and Vite. https://lnkd.in/dHhkhHXJ