3 Ways to Turn a Web App Into a Native Mobile App

You already have a web app that works. Now you want it on the App Store and Google Play too — with push notifications, biometric login, and a real app icon on the home screen.

There are three common ways to get there. Here is each one in plain language, focused on the differences that actually matter.

1. Ship it as a PWA (Progressive Web App)

A PWA(Progressive Web App) is a way to make a website behave like an app installed on a phone. You can add an icon to the home screen and run it separately from the browser. It uses web technologies like a manifest and a service worker to do this.

• Good: It's the cheapest. You don't build a separate app, and you keep your existing web code as-is.
• Harder: Compared with a native app, there are differences in which device features you can use and how it behaves — and it isn't listed on the App Store or Google Play the way an ordinary native app is.

On iOS, a PWA added to the Home Screen can use web push (since iOS 16.4). But it isn't identical to native push — for example, the user has to add the web app to the Home Screen first, among other differences.

So if store presence isn't important and serving your product mainly through the web is enough, a PWA is the simplest option.

2. Rebuild it as a native app

The second way is to build a mobile app separately from your existing web app. You can build each one natively — Swift for iOS, Kotlin for Android — or use a cross-platform framework like React Native or Flutter. A cross-platform framework is a way to build the iOS and Android apps together from a single codebase.

• Good: You can use a wide range of device features and create the most natural, mobile-tuned user experience.
• Harder: On top of your existing web app, you now develop and maintain a separate app codebase too.

If you build separately in Swift and Kotlin, you may end up maintaining three codebases:

Web app     iOS app     Android app

A new feature built on the web isn't done there — you may have to build the same feature again in the mobile app. React Native or Flutter lets you share much of the iOS and Android code, but it's still a separate app project from your existing web app.

If the app itself is your core product, and you have a team to keep developing and maintaining native code, this is the best fit.

3. Run your web app inside a native app (WebView + native bridge)

The third way keeps your existing web app and turns it into a native app around it. You put a WebView in the app and run your existing web app inside it. Think of a WebView as a browser area that shows web pages inside an app.

But it doesn't end with just showing a website in a WebView. To reach phone features that are hard to use from the web directly, you use a native bridge(native bridge) — it connects the JavaScript inside the WebView to the phone's native features.

For example, when your web app's JavaScript calls something like:

requestBiometricAuth();

the bridge connects that call to the real biometric feature on iOS or Android. Through this, your existing web app can use things like:

• Push notifications
• Camera
• Biometric authentication
• File picker
• Native screens and navigation
• In-app purchases
• Other iOS / Android device features

Good: you keep your existing web codebase as much as possible. You rarely have to rebuild web features from scratch on iOS and Android — you connect native features only where you need them. In other words:

Existing web app
   ↓
WebView
   ↕
Native bridge
   ↓
iOS / Android features

Watch for: showing a website in a WebView doesn't automatically make a good native app. On the App Store especially, an app that is just a repackaged website can run into trouble in review — Apple requires apps to go beyond a simple website wrapper, with enough features, content, UI, and usefulness. So instead of just showing a web page, it matters to connect features that fit the app's purpose — push notifications, biometric auth, native navigation, camera and file features, in-app purchases, app-appropriate screen behavior — and give a genuinely useful app experience. A native bridge is what connects your web app to those device features.

If you already run a web app and want to ship on the App Store and Google Play without rebuilding a separate native app from scratch, this approach can be a good fit.

How to choose, quickly

Your situation	Best fit
Store presence isn't important; web-first is enough	PWA
The app is the core product and you have a native team	Rebuild as native
Keep the existing web app as much as possible, ship to stores	WebView + native bridge

No option is simply better than the others. What matters is the product and team you have today, and the features your app needs. If the app is the center of your product, a rewrite may fit better. But if you already run a web product and want to make the most of your existing web code, WebView plus a native bridge can be the realistic choice.

The hard part starts here

Putting up a WebView is not hard on its own. But to build an app you can actually ship to the stores, you have to build things like:

• Setting up the iOS and Android projects
• Connecting native features
• The bridge between JavaScript and the app
• Permission handling
• Push notifications
• Biometric authentication
• In-app purchases
• App updates
• Preparing for the App Store and Google Play release

You save the effort of rebuilding the web app — but connecting web and native, and maintaining that connection over time, still remains.

That is exactly what Unveily helps with: it keeps your existing web app as-is and connects the native features you need — store publishing, push notifications, biometric auth, and in-app purchases. When you want to extend your web app into a native app without rebuilding it from scratch, that is what it is for.