Woman browsing fashion blog on laptop and mobile phone for online shopping inspiration.

Stephanie Buttermore

FlexMade developed the SB Fit App for Stephanie Buttermore, offering personalised workouts and nutrition tracking. Available on Google Play and the App Store, the app delivers a seamless user experience for fitness enthusiasts. Our team built it from scratch, ensuring high performance and usability.

Location: Canada
Industry: Health, Wellness & Fitness
Website: https://www.stephaniebuttermore.com/
Cooperation period: 5+ years
Team size: 10+ engineers
Services: Web Development | Mobile Development | Quality Assurance | Custom Software Development

About client

Stephanie Buttermore is a fitness expert and content creator renowned for promoting balanced health and wellness. She has a vast online presence, offering personalised coaching, workout routines, and nutrition guidance to a global audience. With a mission to make fitness accessible and enjoyable, Stephanie decided to create the SB Fit app, and we handled its development. Her brand emphasises authenticity, empowering individuals to take control of their health journeys. Regularly collaborating with fitness professionals, Stephanie ensures the app’s plans are sustainable and effective. The SB Fit app offers exclusive content, workouts, and challenges, helping users track progress, set goals, and stay motivated. With Stephanie’s vision and FlexMade’s expertise, the app is rapidly growing and creating a vibrant fitness community.

Smiling woman: Stephanie Buttermore PhD, nutrition and exercise science expert.

About project

The SB Fit mobile app is a cross-platform solution available on iOS and Android, offering personalised training programmes by Stephanie Buttermore. Users can register, view, purchase, and track their fitness plan, with the option to synchronise accounts from any other app for a smooth transition. The app tracks workouts with detailed logs and notes and includes a library of instructional videos. FlexMade enhanced the app’s core functionalities, ensuring smooth integration of subscription features and third-party services. We focused on creating a reliable, intuitive interface while optimising the app for both platforms. Designed to scale, the app supports Stephanie’s brand growth, extending her services to a broader audience with an engaging user experience.

Objectives & Challenges

The primary objective was to create a cross-platform mobile app that lets users access and purchase workout programmes by Stephanie Buttermore. The app needed seamless user account management and subscription synchronisation from a previous app. A key challenge was ensuring smooth synchronisation of user data across platforms to avoid disruptions during the transition. It also had to support features like workout tracking, video tutorials, and in-app purchases, with consistent performance on both mobile operating systems. The development process involved integrating external APIs for subscription sync while maintaining security and stability. The app had to be scalable to support growing users and customisable to display workouts and track progress. Additionally, the app had to align with the client’s business goals, balancing functionality and profitability, all while managing tight deadlines and ongoing adjustments.

Approach & Methodology

FlexMade adopted a cross-functional approach, assembling a team of mobile app developers, backend engineers, a designer, and QA specialists. The team ensured flexibility and continuous collaboration throughout development, focusing on delivering a scalable, user-friendly app with seamless functionality across mobile platforms. Regular progress evaluations and close communication with the client helped promptly integrate feedback. Key challenges included integrating third-party services, especially subscription synchronisation while maintaining data consistency. Extensive testing focused on user account transfers and subscription validation. The team worked closely with the client to achieve business goals, such as monetisation through in-app purchases. The app’s design aligned with the client’s brand, ensuring an intuitive interface. The approach allowed the project to adapt to evolving requirements and meet deadlines.

Three smartphones displaying Stephanie's Muscle Works fitness app interface.

Users

Manages user registration, authentication, and account synchronisation with external applications. Users can create a new account or log in using existing credentials via email or Facebook. A key feature is the seamless migration of user data from another app, ensuring all account details, subscriptions, and preferences are preserved. By linking profiles from external platforms, it allows users to continue their activities without disruption. Advanced security measures protect user data during the transfer process, ensuring reliability. The module also includes profile management features, allowing users to update personal information and adjust settings as needed.

Subscriptions

Allows users to subscribe to workout programmes and manage their subscription preferences. Users can select from different plans that unlock exclusive training content, including structured programmes and video tutorials. The module ensures a clear overview of active, expired, and upcoming subscriptions, giving users full control over their access. It also automates renewal reminders and payment processing to prevent interruptions. Additionally, subscription status is continuously updated within the app, ensuring users always have access to their purchased content. Robust security measures protect payment data, ensuring a safe and seamless subscription experience.

Fitness app interface showcasing workout programmes and exercise routines on a smartphone screen.
Program & Purchase

Programme & Purchase

Acts as the catalogue where users can browse, compare, and purchase new workout programmes. It features a detailed selection of available training plans, allowing users to read descriptions, view difficulty levels, and explore trial options before making a purchase. Once a programme is purchased, users gain immediate access to the content. Regular updates keep the programme catalogue fresh, adding new content and offering personalised recommendations to enhance the user experience.

Workout

The core part of the app that enables users to engage with their training routines. It provides structured workout sessions with detailed instructions, including exercises, sets, and repetitions tailored to different fitness levels. Users can log their performance, such as weights lifted and repetitions completed, ensuring progress tracking over time. The module offers real-time feedback and adjustments based on user input, keeping workouts effective and engaging.

Fitness app interface on three smartphones showing workout routines and progress tracking.
Three smartphones displaying a women's fitness app with workout offers and subscription details.

Notifications & Updates

Ensures that users are always informed about new content, updates, and promotional offers. This module sends timely reminders about upcoming workouts, new programme releases, and achievements like fitness milestones or completed challenges. It also provides updates on discounts, new tutorials, and other important app-related events. By keeping users engaged with personalised push notifications, the module plays a crucial role in maintaining user retention and motivation. It is designed to send non-intrusive alerts, allowing users to customise notification preferences based on their needs.

Responsive design mockup: Laptop, tablet, and phone displaying a women's fitness training programme.

Job done

The solution

FlexMade delivered a fully functional fitness app designed for personalised workout plans and nutrition tracking. The intuitive interface ensures smooth navigation, while a secure authentication system protects user data. A robust backend enables real-time synchronisation of training, progress, and nutrition information. The app seamlessly integrates with third-party fitness APIs and wearables for accurate tracking. Users can join challenges to stay motivated, enhancing engagement. Scalable architecture supports growth, and ongoing post-launch support ensures performance optimisation and feature updates.

The result

Since its launch, SB Fit has steadily grown on iOS and Android, with users tracking workouts and nutrition effortlessly. High engagement stems from its user-friendly design and personalised features. Customer retention has increased, with users returning daily for workouts and challenges. The app remains stable even during peak traffic, ensuring a smooth experience. Users praise its ease of use and motivation-driven features. SB Fit has positioned itself as a strong competitor in the fitness market, helping Stephanie Buttermore expand her brand. Ongoing support and continuous updates ensure the app evolves to meet user needs.

The technologies

  • Icon JavaScript
    JavaScript
  • Technology logo
    Python
  • Icon Django
    Django
  • Icon TypeScript
    TypeScript
  • Icon Redux
    Redux
  • Icon React Native
    React Native
Fitness app mockup on three iPhones displaying workout programmes and healthy lifestyle bundles.

Related cases

Horsemapp - A platform that connects horse people and their needs

Horsemapp - A platform that connects horse people and their needs

FlexMade developed Horsemapp, a cross-platform app that combines social networking, a marketplace and horse profile management, offering built-in messaging for easy communication and seamless interaction between users.

Read more
Call Control - Innovative Call Screening Solution

Call Control - Innovative Call Screening Solution

Call Control is a leading USA-based software company specialising in advanced call-blocking technology that eliminates robocalls, phishing attempts, and unwanted telemarketing calls. Their innovative applications and tools empower users to take control of their phone experience, offering solutions for wireless, landline, and enterprise subscribers. 

Read more
Beurer - Health and Well-being

Beurer - Health and Well-being

FlexMade partnered with Beurer, a global leader in health and wellness products, to enhance their web platform. By assembling a dedicated development team within our organization, we optimized their systems, improved performance, and ensured a seamless user experience. This collaboration empowered Beurer to deliver on their mission of providing innovative solutions for health and wellness worldwide.

Read more

Contact us

12816 NE 104th ST, Kirkland, WA 98033, USA