How to Convert Your Supabase Web App to Native iOS & Android

Converting a Supabase web app to a mobile app requires bridging your existing web frontend with a native runtime like Capacitor. While Supabase provides the backend infrastructure · authentication, database, and storage · a native binary is needed to access device hardware and list your app on the iOS App Store and Google Play Store.

Why Supabase Apps Need a Native Layer

Supabase is an excellent backend choice for modern web apps built on platforms like Lovable, Bolt, or Cursor. However, a web app running in a mobile browser lacks the "stickiness" and functionality of a native application. To truly convert a Supabase app, you must move beyond a simple shortcut on the home screen.

A native conversion allows you to implement:

• Native Authentication: Integrating Apple Sign In and Google OAuth directly into the device's keychain.
• Biometrics: Using Face ID or Touch ID to unlock the app, which interfaces with Supabase Auth.
• Push Notifications: Sending alerts via Firebase Cloud Messaging (FCM) to re-engage users.
• App Store Presence: Meeting Apple's Guideline 4.2 by providing a high-quality, integrated experience.

The Technical Path: Capacitor vs. WebView

There are two primary ways to handle the conversion.

1. The Capacitor Approach (Recommended)

Capacitor is an open-source native runtime that turns your web project into a real native binary (.ipa for iOS and .aab for Android). Unlike a simple WebView wrapper, Capacitor allows you to call native APIs (like the camera or haptics) using standard JavaScript.

For Supabase users, this is the most robust path. It ensures that your supabase-js client works exactly as it does on the web, while giving you the hooks needed for native features. This is the method we used for Ginza, a social network built with Lovable and Supabase that passed Apple review on the first attempt.

2. The Subscription Wrapper Approach

Services like BuildNatively or Median.co offer tools to wrap your URL. While fast, these often come with recurring costs. BuildNatively starts from $19/month ($228/year), and Median.co charges a $229 one-time fee plus $179/year after the first 12 months. Often, these services do not provide the full source code, meaning you are locked into their platform.

Step-by-Step Guide to Conversion

Step 1: Prepare Your Web App

Ensure your Supabase web app is fully responsive. The mobile app will render your web content, so the UI must feel natural on small screens. If you built your app using Lovable or Bolt, your CSS is likely already mobile-friendly.

Step 2: Configure Supabase Auth

Native apps handle redirects differently than browsers. You must update your Supabase dashboard to allow the custom URL schemes used by your mobile app (e.g., com.yourapp://). This is critical for social login and password reset flows.

Step 3: Install Capacitor

If you are doing this yourself, you would initialize Capacitor in your web project:

npm install @capacitor/core @capacitor/cli
npx cap init

You then add the platforms:

npx cap add ios
npx cap add android

Step 4: Implement Native Features

To pass Apple's strict review process, your app must feel native. This means adding:

• Splash Screens: A high-resolution image that displays while the app loads.
• Native Modals: Using native UI for alerts and photo pickers.
• Biometric Auth: Connecting Supabase sessions to Face ID.

The Cost of Going Native

When converting your app, you must account for platform fees and development costs.

• Apple Developer Program: $99/year (£79 in the UK).
• Google Play Console: $25 one-time fee.
• Development: You can spend weeks learning the native tooling, or use a service like KW Native.

At KW Native, we provide a one-time fee model. Our Standard package (£599) covers both iOS and Android conversion, including the source code and a GitHub repository. Unlike subscription services, you own the code and the app is published under your own developer accounts.

Common Pitfalls to Avoid

Guideline 4.2 Rejections

Apple often rejects apps that are "just a website." To avoid this, your Supabase app must use native features. We specialise in bypassing Guideline 4.2 by deeply integrating native APIs so the app provides a unique experience compared to the browser version.

Authentication Loops

A common issue when converting Supabase apps is the "auth loop," where the user logs in but the session isn't persisted correctly in the native layer. Using Capacitor with a properly configured RUNBOOK.md ensures that sessions are handled securely across app restarts.

Is KW Native Right for You?

If you are a non-technical founder who has built a functional tool on a platform like Cursor or Replit and you want a professional, native result without a monthly subscription, we can help.

We deliver real native binaries in 7 to 12 business days, depending on your chosen plan. You receive the full source code, ensuring you are never locked into a vendor.

Get started with your conversion today.