Case study · commerce and loyalty
One app. Shopping, loyalty, and daily engagement.
For SFD, we built a mobile ecosystem that combines complete e-commerce with points, challenges, and healthy habits.
- 100,000+
- app downloads
- 4.9
- App Store rating
- Nominee
- Mobile Trends Awards 2025 · Commerce
The scale of SFD
A product for a nationwide retail network — not a single store
SFD combines e-commerce with a network of owned and franchised stores. We were not designing a single feature, but a mobile sales and loyalty channel for a large omnichannel business.
See business scale sources
- 93
- stores in the network
- 56%
- of revenue from e-commerce
- 8,000+
- SKUs in the range
20 owned and 73 franchised at the end of Q4 2025.
Online is a core sales channel, not an add-on.
A broad catalog with complex commerce logic.
Challenge and response
From an occasional purchase to a daily relationship
A shopping feature alone does not create a habit. We combined commerce with mechanics that give users a reason to return between purchases.
What we designed
One ecosystem, many responses
Commerce and loyalty operate as one system
Each module has a distinct role, but together they create a coherent experience and a closed engagement loop.
Shop and purchases
Catalog, promotions, product, cart, and account.
Points and rewards
A loyalty program visible in daily use.
Challenges
Goals, streaks, and progress that build regularity.
Content and motivation
Knowledge and communication supporting healthy choices.
Apple and Google Health
Automatic activity data collection.
Real-time synchronization
Consistency with the SFD e-commerce backend.
01 · Mobile commerce
The complete shopping experience in your pocket
Customers move from inspiration and search to product and cart without leaving the app.
02 · Habits and gamification
Challenges that give people a reason to return
Activity, hydration, and goals turn the app from a shop into a daily relationship with the brand.
The product in practice
Two modes. One coherent experience.
Real app screens show how shopping, points, and motivation work together.
Technology and integrations
A stable foundation for a product built to evolve
One codebase, secure integrations, and synchronization with the existing SFD ecosystem.
React Native + Expo
Consistent development on iOS and Android.
Apple Health
Activity synchronization on iOS.
Google Health Connect
Integration with the Android ecosystem.
E-commerce API
Products, promotions, and orders in real time.
Client voice
See how SFD evaluates the project
Mateusz Pazdan, CEO of SFD S.A., talks about the product and collaboration with GMI.
Process and delivery
From strategy to a working product
- 01
Discovery
- 02
Architecture
- 03
UX/UI
- 04
Development
- 05
Integrations and testing
- 06
Growth
FAQ
Confidence before starting a similar project
Can the app work with our current e-commerce platform?+
Yes. We audit APIs, data, payments, promotions, and the order journey first, then design an integration layer without replacing systems that already work.
How do you reduce loyalty-integration risk?+
We separate points, transactions, and communication into testable modules, then run integration tests, edge-case scenarios, and a controlled rollout.
Can the product evolve after launch?+
Yes. The architecture and process support new mechanics, campaigns, integrations, and data-informed optimization.
How do you maintain reliability on iOS and Android?+
A shared React Native codebase reduces platform drift, while device testing, monitoring, and the release process support both platforms.