Medusa.js Mobile App Storefronts: Using React Native with the Medusa API

Medusa.js being headless means the same backend can power a web storefront and a mobile app without duplicating commerce logic, but building the mobile side well still involves decisions that a lot of teams underestimate going in. React Native has become a natural pairing for Medusa mobile storefronts, largely because it shares the JavaScript ecosystem with Medusa's own stack, but a few architectural choices early on make a meaningful difference to how smoothly the build goes.

Why React Native Pairs Well With Medusa

Medusa exposes its commerce functionality through a REST or GraphQL API, and React Native's ability to consume that same API without needing a separate backend integration layer is what makes the pairing efficient. Teams already running a Medusa powered web storefront can often reuse a meaningful portion of their data fetching and state management logic between the web and mobile codebases, particularly around cart, checkout, and product catalogue handling, cutting duplicate development effort significantly.

Setting Up Authentication Correctly From the Start

Mobile authentication flows differ enough from web that this is worth planning deliberately rather than porting a web auth pattern directly. Medusa's customer authentication endpoints work the same way regardless of client, but mobile apps need to handle token storage securely using the device's native secure storage rather than browser-style local storage, and need to account for token refresh behaviour differently given how mobile sessions persist across app backgrounding and reopening.

Handling Cart and Checkout State

Medusa's cart API works identically whether called from web or mobile, but mobile apps need more deliberate handling of offline or unstable network conditions, since a user on mobile data is more likely to experience connectivity gaps mid-checkout than a desktop user. Implementing local cart state caching with proper sync-back logic once connectivity resumes prevents lost cart data being a source of checkout abandonment specific to the mobile experience.

Payment Integration Considerations

Payment provider SDKs often have separate mobile specific packages distinct from their web JavaScript SDKs, and Medusa's payment plugin architecture needs to account for this when the same payment provider is used across both web and mobile storefronts. Testing payment flows specifically on mobile, rather than assuming a working web integration transfers directly, catches integration issues that only surface in the mobile SDK's specific implementation.

• Use native secure storage for authentication tokens, not web-style local storage patterns

• Plan for offline cart state handling given mobile network conditions differ from desktop

• Test payment provider SDKs specifically on mobile, web integration success does not guarantee mobile parity

• Reuse data fetching logic between web and mobile where Medusa's API responses are shared, to reduce duplicate work

Push Notifications and Order Updates

Unlike a web storefront, a mobile app has the advantage of push notifications for order status updates, which meaningfully improves the post-purchase experience but requires a separate integration layer since Medusa's core API does not handle push delivery directly. Connecting Medusa's order status webhooks to a push notification service is a common pattern for closing this gap without needing custom backend work beyond the webhook listener itself.

For teams starting this build, the official Medusa.js documentation covers the core API endpoints needed for a mobile client, and our work on Medusa.js ecommerce development includes mobile storefront builds where we have worked through exactly these authentication and offline handling patterns for production apps.