I've built production apps with all three approaches. Here's an honest comparison based on real projects — not framework fan wars.
The Quick Answer
- Flutter → Best if you're starting from scratch and want pixel-perfect custom UI
- React Native → Best if your team already knows React and you need native modules
- WebView Wrapper → Best if you already have a website and need an app fast
Development Speed
| Approach | Time to MVP | Learning curve |
|---|---|---|
| Flutter | 4-8 weeks | Dart is new for most devs |
| React Native | 3-6 weeks | Familiar if you know React |
| WebView Wrapper | 1-3 days | Almost zero |
The speed difference isn't even close. If you already have a responsive website, a WebView wrapper gets you into the App Store in days. Flutter and React Native require building everything from scratch.
Performance
Let's be real about this:
Flutter renders everything through its own Skia engine. Smooth 60fps animations, consistent across devices. But the initial bundle is larger (~15-20MB minimum).
React Native bridges to native UI components. Performance is great for most apps, but can struggle with complex animations or long lists without optimization.
WebView Wrapper performance depends entirely on your website. If your site is fast (good Core Web Vitals), the app will be fast. If your site is slow, wrapping it won't fix that.
Real-world benchmark
For a typical e-commerce app:
- Flutter: 60fps scroll, 2.1s cold start
- React Native: 58fps scroll, 1.8s cold start
- WebView (optimized site): 55fps scroll, 1.5s cold start (cached)
The gap is smaller than most people think.
Native Features
This is where the approaches diverge significantly:
| Feature | Flutter | React Native | WebView Wrapper |
|---|---|---|---|
| Push notifications | ✅ | ✅ | ✅ (via SDK) |
| Camera access | ✅ | ✅ | ⚠️ Limited |
| Biometric login | ✅ | ✅ | ✅ (via bridge) |
| Offline mode | ✅ | ✅ | ✅ (caching) |
| GPS/Location | ✅ | ✅ | ✅ (via bridge) |
| Bluetooth | ✅ | ✅ | ❌ |
| AR/VR | ✅ | ⚠️ | ❌ |
| File system access | ✅ | ✅ | ⚠️ Limited |
If your app needs Bluetooth, AR, or deep hardware integration — Flutter or React Native is the way. For most business apps (content, e-commerce, dashboards), a WebView wrapper covers everything.
Cost Comparison (Real Numbers)
For a mid-complexity app (auth, push, payments, 10 screens):
| Flutter | React Native | WebView Wrapper | |
|---|---|---|---|
| Developer cost | $15-30K | $15-25K | $0-3K |
| Timeline | 2-3 months | 2-3 months | 1-3 days |
| Ongoing maintenance | $3-5K/year | $3-5K/year | $500-1K/year |
| Total Year 1 | $18-35K | $18-30K | $0.5-4K |
The cost difference is the elephant in the room that framework advocates don't talk about.
App Store Approval
Flutter & React Native: Generally smooth. Both produce genuine native binaries.
WebView Wrapper: This is the main risk. Apple's Guideline 4.2 specifically targets apps that are "just a website." The key to approval is adding native features:
- Push notifications (mandatory, in my experience)
- Biometric login
- Offline functionality
- Deep links
If your wrapped app has these features, it passes review. I've personally gotten 20+ WebView apps approved on both stores.
When to Use Each
Choose Flutter when:
- You're building from scratch with no existing website
- You need custom animations and pixel-perfect UI
- You have budget for 2-3 months of development
- Your team is willing to learn Dart
Choose React Native when:
- Your team already knows React/JavaScript
- You need access to a large ecosystem of native modules
- You want to share code with a React web app
Choose WebView Wrapper when:
- You already have a responsive website
- You need the app in days, not months
- Budget is limited (under $5K)
- Your app is content-focused (blog, e-commerce, dashboard, SaaS)
- You want to maintain one codebase (the website) instead of two
My Honest Take
Most businesses don't need Flutter or React Native. They need their existing website in the App Store with push notifications and a home screen icon. That's it.
If you're a startup with VC funding building the next Instagram — yes, go Flutter. If you're a Shopify store, a SaaS dashboard, or a content site wanting mobile presence — a WebView wrapper saves you $20K+ and 3 months.
The right tool depends on the job, not the hype.
Originally published at code2native.com
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