From Storefront to Style Companion: How Expatify Built a Shopify-Powered Mobile Commerce App for SallangSallang

Fashion & Apparel Fashion eCommerce Headless Commerce mobile app Mobile UX Shopify Storefront API
From Storefront to Style Companion: How Expatify Built a Shopify-Powered Mobile Commerce App for SallangSallang

SallangSallang is an Indonesia-based multi-brand fashion destination, known for curating authentic Korean and international labels across bags, apparel, shoes, and accessories. With a fast-moving catalog and a distinct editorial point of view, the brand needed a mobile experience that could feel as considered as its products without creating a separate commerce operation behind the scenes.

Expatify had already helped establish a more scalable Shopify storefront for product visibility and campaign management. The next step was to bring that commerce foundation into shoppers’ hands: a native mobile app built for discovery, returning visits, and confident checkout.

The goal was not simply to place the website inside an app. It was to create a mobile-native style companion that lets customers browse curated brands, return to saved products, build a cart, and complete payment through Shopify while keeping the catalog, cart, checkout, and customer commerce data connected to the same Shopify ecosystem.

Feature.

A curated fashion experience designed for the small screen

Multi-brand fashion is exciting because there is always something new to discover. It also means that a mobile storefront must make a broad catalog feel clear, focused, and easy to explore.

Expatify designed the SallangSallang app around a premium, editorial-led mobile experience. Shoppers can move through brand and category paths, curated collections, new arrivals, product grids, and search from a touch-first interface. The visual system uses generous spacing, clean typography, and a restrained monochrome foundation so the fashion imagery remains the focal point.

Rather than forcing users to navigate a dense desktop-style catalogue on a phone, the app gives product discovery a more immediate rhythm: browse, search, compare, save, and continue exploring. It makes the SallangSallang assortment feel purposeful while preserving the breadth expected from a multi-brand retailer.

Feature.

Shopify-powered cart and checkout, delivered in a native journey

Mobile commerce needs the convenience of an app without compromising the trust and operational reliability of the commerce platform behind it. Expatify connected the native experience to the Shopify Storefront API, allowing the app to retrieve product information and create a shopper’s cart from the same Shopify commerce foundation that supports the brand’s storefront.

Customers can select variants, adjust quantities, and prepare their cart within the app. When they are ready to buy, the app hands the completed cart to Shopify checkout in an in-app browser. This keeps payment and order processing within Shopify’s established checkout flow, while preserving a smooth, continuous mobile journey for the customer.

The result is a practical headless-commerce architecture: a purpose-built mobile front end for browsing and cart interactions, paired with Shopify for the transactional core.

Feature.

A more connected experience for returning shoppers and campaign teams

Fashion customers often shop over time. They discover an item, save it, return later, and continue from where they left off. To support that behaviour, Expatify built persistent mobile conveniences into the app, including saved wishlist items, a persistent cart, and recent search history.

The app also supports customer account access and profile journeys, creating a more personal experience for shoppers who return to the brand. Behind the experience, configurable app content enables the brand team to manage selected home, navigation, copy, brand, and collection presentation without requiring every routine update to become a new app release.

For campaign communication, the app includes a push-notification foundation that can route customers to relevant destinations such as a product, collection, search, cart, or wishlist. Together, these capabilities give SallangSallang a more connected mobile channel while keeping the day-to-day experience focused on fashion discovery.

The Challenge.

Translating a large multi-brand catalogue into a clear mobile journey

SallangSallang’s assortment spans multiple labels and product categories. Presenting that choice on a small screen required an interface that helped shoppers discover what mattered without losing the brand’s premium, minimalist character.

Preserving a single commerce source of truth

Running a mobile app alongside a Shopify storefront can create disconnected catalogue data, carts, and checkout experiences when the systems are treated separately. The mobile channel needed to extend Shopify rather than duplicate its commerce operation.

Building reasons to return beyond a single session

Fashion discovery does not always end in one visit. The experience needed useful continuity saved products, retained carts, recent searches, customer access, and a way to reconnect customers with relevant in-app destinations.

Solutions.

Expatify developed a Shopify-powered mobile commerce app that translates the SallangSallang fashion experience into a native, touch-first journey.The app uses Shopify’s Storefront API for core shopping data and cart creation, then moves customers into Shopify checkout for the purchase flow. This allows the brand to retain Shopify as the operational commerce platform while delivering a mobile interface tailored to discovery and repeat engagement.On the experience layer, Expatify built navigation for brands, categories, curated collections, search, product detail, variants, wishlist, and cart. Persistent local states help customers return to saved products and recent activity, while remote configuration supports selected content and navigation updates without making each content refresh a development task. Push-notification routing provides a foundation for directing customers into relevant mobile destinations when campaigns or updates warrant it.

The Impact

  • A dedicated mobile fashion destination: SallangSallang now has a mobile-native environment designed around browsing, saving, and returning to curated fashion.
  • One connected commerce foundation: Product discovery and cart activity are powered by Shopify, while checkout stays within Shopify’s established transaction flow.
  • More continuity for repeat shoppers: Wishlist, cart, search history, and account journeys reduce the friction of picking up where a customer left off.
  • More flexible app presentation: Selected home, brand, collection, navigation, and copy configuration can be managed without treating every content update as a new mobile release.
  • A campaign-ready customer channel: Notification routing creates a technical foundation for leading opted-in customers back to relevant areas of the app.

Most importantly, the mobile app gives SallangSallang a direct, brand-led commerce touchpoint that complements its existing Shopify storefront rather than competing with it.

Services.

  • Mobile Commerce Strategy
  • Headless Shopify Development
  • Expo and React Native App Development
  • Shopify Storefront API Integration
  • Native UI/UX Design
  • Mobile Cart and Shopify Checkout Integration
  • Remote Content Configuration
  • Customer Account and Retention Experience
  • Push Notification Architecture

SallangSallang’s mobile app shows that extending a fashion brand into mobile does not require abandoning the commerce systems that already work. With Shopify as the transaction backbone and a carefully designed native interface at the front, Expatify created a mobile experience that is focused, flexible, and built around how fashion customers actually browse.

By connecting curated discovery, saved shopping activity, and a secure Shopify checkout flow, the app turns the SallangSallang storefront into a more personal, always-available style companion.

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Kapittal Kpttll - Expatify
High-Spirits Commerce: How Expatify Engineered Advanced Promotions and Localized Logistics for Kapital.