Mobile commerce is growing rapidly, and many WooCommerce store owners want their own mobile application. A mobile app can improve user experience, increase sales, and provide direct access to customers through their smartphones.
One of the easiest ways to build a WooCommerce mobile app is by using Expo React Native. This framework allows developers to create powerful cross-platform apps using JavaScript without writing native Android or iOS code.
In this article, we will explain how to build a WooCommerce mobile app using Expo React Native and an Express.js backend.
Why Create a WooCommerce Mobile App
A mobile app provides several advantages compared to a traditional website.
First, mobile apps load faster because resources are stored locally on the device. This improves the browsing experience and reduces bounce rates.
Second, apps allow you to send push notifications for promotions, order updates, and special offers. This helps increase engagement and repeat purchases.
Third, the checkout experience in a mobile app is smoother and more optimized compared to mobile browsers.
Because of these advantages, many successful eCommerce businesses are investing in mobile apps.
Technology Stack
To build the mobile app, the following technologies are commonly used.
The frontend is built using Expo React Native, which allows rapid development and easy Android APK generation.
The backend is built using Express.js, which acts as a secure proxy between the mobile app and the WooCommerce REST API.
For state management, developers can use React Context and React Query.
Payments are handled through WebView-based payment gateways, which open the hosted payment page inside the mobile app.
WooCommerce itself acts as the main data source, so no separate database is required.
App Architecture
A well-structured mobile app keeps the project organized and scalable.
The application usually contains several main screens.
The Home screen displays featured products, banners, and categories.
The Search screen allows customers to search products and apply filters.
The Cart screen shows items added by the customer and calculates totals.
The Wishlist screen allows users to save products for later.
The Profile screen manages user accounts, login, and order history.
In addition to these tabs, there are screens for product details, checkout, payment processing, and order tracking.
WooCommerce API Integration
WooCommerce provides a REST API that allows external applications to interact with the store.
However, the mobile app should not directly use WooCommerce API keys because this would expose sensitive information.
Instead, an Express.js backend should act as a proxy.
This backend receives requests from the mobile app, communicates with WooCommerce, and returns safe responses.
Common API endpoints include:
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Fetch product list
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Fetch product details
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Fetch categories
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Create orders
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Update order status
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Fetch customer orders
This approach keeps the mobile app secure and flexible.
Product Listing
Products are fetched from WooCommerce and displayed in a grid layout inside the app.
Each product card usually shows:
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Product image
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Product name
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Price or sale price
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Add to cart button
Users can tap on a product to open the product detail screen where they can view images, descriptions, reviews, and related products.
Shopping Cart
The shopping cart is usually managed locally using React Context and AsyncStorage.
This allows the cart to remain saved even if the user closes the app.
Customers can add products, update quantities, remove items, and view the order summary before checkout.
Checkout Process
The checkout process typically includes the following steps.
First, the customer enters shipping information such as name, phone number, and address.
Second, the mobile app creates a WooCommerce order through the backend API.
Third, the payment gateway session is created.
Finally, the payment page opens inside a WebView where the customer completes the transaction.
Once payment is successful, the order status is updated automatically.
Payment Integration
Most payment gateways like Cashfree, Razorpay, and PayU provide hosted checkout pages.
Instead of integrating native SDKs, the mobile app can simply open the payment page inside a WebView.
The app monitors the payment page URL and detects whether the payment was successful or failed.
This method is simple, secure, and compatible with most gateways.
Order Tracking
Customers should be able to track their orders inside the app.
The order tracking page typically displays:
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Order number
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Order date
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Payment method
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Order status
The order status usually follows stages such as Pending, Processing, Shipped, and Delivered.
Customer Support Integration
Many mobile apps also include a WhatsApp support button.
This allows customers to quickly contact the store for product inquiries, order support, or general questions.
The app simply opens WhatsApp with a predefined message when the button is tapped.
Building the Android APK
Expo provides a simple way to build Android applications.
Using the Expo Application Services (EAS), developers can generate an APK file that can be installed on Android devices.
The build command is:
eas build -p android –profile preview
After the build process finishes, Expo provides a download link for the APK.
Conclusion
Building a WooCommerce mobile app using Expo React Native is an efficient and scalable solution for modern eCommerce businesses.
By combining WooCommerce APIs, an Express backend, and WebView-based payment integration, developers can create a full-featured mobile shopping experience.
With features like product browsing, cart management, checkout, payment processing, and order tracking, a WooCommerce mobile app can significantly improve customer engagement and increase sales.
For WooCommerce store owners looking to expand their business, launching a mobile app is a powerful step toward the future of eCommerce.
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