How to increase sales and e-commerce customer engagement? Case study: SFD loyalty app
SFD is more than just a regular shopping app. It is a comprehensive loyalty application designed to support engagement and build a community around the brand. It skillfully combines the full functionality of an online store with motivational elements, which translates into regular user returns and higher basket values. Thanks to this solution, SFD has become an everyday companion for people who care about their fitness, and not just a tool for occasional purchases.
Table of content
Table of Contents
SFD is more than just a regular shopping app. It is a comprehensive loyalty application designed to support engagement and build a community around the brand. It skillfully combines the full functionality of an online store with motivational elements, which translates into regular user returns and higher basket values. Thanks to this solution, SFD has become an everyday companion for people who care about their fitness, and not just a tool for occasional purchases.

Who is the client?
SFD is a recognised Polish distributor of dietary supplements and sports nutrition, with an established position in both e-commerce and stationary sales. Get to know the history and philosophy of the SFD brand.
The company was looking for a solution that would not only open a new mobile sales channel, but above all, strengthen relationships with customers. A dedicated loyalty application turned out to be the perfect tool for this purpose:
- Open a new mobile sales channel
- Increase customer engagement and loyalty
- Attract a younger target group
- Differentiate your brand from the competition
Challenges
Engaging challenge module
The key challenge was to design and implement a challenge system that would effectively attract users to open the application every day. The module had to be intuitive to use and at the same time provide a mechanism for managing challenges from the administration panel.
A full-fledged mobile store
Reproducing the functionality of the extensive SFD online store in the mobile version was a significant challenge. The loyalty application had to support all store functions, such as product packages, discounts or products for points, while maintaining a light and intuitive mobile interface.
Integration with health platforms
Integration with Apple Health and Health Connect required the development of effective mechanisms for synchronising and processing data on users’ physical activity.
Complex backend integration
The application had to work seamlessly with the customer’s existing technology ecosystem, ensuring data about loyalty points, user accounts and purchasing processes was synchronised.
Our solution
Technologies
- Frontend: React Native with Expo – enabling rapid development of iOS and Android applications from one code base
- Integrations: Apple Health/ Health Connect API, own API for synchronisation with the client’s backend
- Architecture: A model that separates motivational data from transactional data, ensuring security and optimal performance
Key Features
Integrated mobile store
A full-fledged online store available as a mobile application, offering all the functionalities of the web version. The interface has been optimised for mobile devices, ensuring intuitive navigation and ease of use. The store is fully integrated with:
- Ordering system
- Stock levels
- SFD loyalty program
Motivational system with challenges
An extensive challenge module is the central element of the application, supporting users in building healthy habits. Users can:
- Carry out daily tasks related to physical activity, sleep hours and drinking water
- Earn points, badges and rewards
- Share your achievements
- Use the challenge module as a private exercise tracking calendar with the ability to enter any exercise with a duration
Challenges can be dynamically added and managed by the SFD team, giving you full control over the content and scale of community engagement.
Personalisation of the experience
The application adapts content and functions to the user’s preferences and training goals. Based on data about activity and behaviour, the system proposes:
- Personalised challenges
- Matching products
- Individual recommendations
Monitoring physical activity
Thanks to integration with Apple Health and Health Connect, the app automatically tracks:
- Daily step count
- Sleep quality

This data is used to motivate users without having to manually enter information.
Similar solutions for your company
Solutions similar to those in the SFD application can also be implemented in your application:
- E-commerce applications with extensive loyalty systems
- Marketplace platforms for specialised industries
- Applications combining sales with consulting and education
- Educational applications that encourage regular learning
- Health platforms promoting healthy habits
- Financial applications that motivate you to save
- Medical applications monitoring health parameters
- Platforms for seniors supporting an active lifestyle
- Wellness applications for companies supporting employee health
Browse our portfolio of mobile applications and get inspired by our projects.
Contact us to discuss how similar solutions can increase sales and engagement for your e-commerce company.