Executive Summary
Lasting lifestyle change depends on consistency, and consistency depends on support between appointments. Most wellness programmes lose contact with clients once they leave the centre, leaving progress untracked and motivation to fade.
HTC Santé engaged Gunpowder Innovations to extend its in-centre programmes into a connected digital health platform. In six months we designed and engineered the complete solution: personalised treatment journeys, practitioner consultations and follow-up, appointment booking, body composition and progress analytics, and GDPR-aligned data infrastructure on AWS.
Engagement at a Glance
Client: HTC Santé
Sector: Digital Healthcare, Preventive Wellness, Lifestyle Transformation
Scope: Healthcare product design, mobile engineering, patient journey systems, analytics, compliance architecture, cloud infrastructure
Users: Clients and wellness practitioners
Technology: Figma, Flutter, AWS, CI/CD
Compliance: GDPR-aligned health data handling
Timeline: 6 months
Business Context
HTC Santé combines fitness, nutrition and preventive health in structured programmes. Its challenge was continuity: clients needed guidance and measurable feedback between sessions, and practitioners needed visibility into progress to adjust treatment. A digital platform could bridge that gap, provided it met the privacy standards expected of health data in Europe.
Business Objectives
Personalise wellness journeys around each client's goals and conditions
Connect digital and in-centre care through integrated consultations and follow-up
Make progress measurable with health metrics and visual reporting
Simplify access with in-app appointment booking
Protect health data with GDPR-aligned architecture
The Challenge
Sensitive data. Health and body composition data required strict privacy and security controls.
Continuity of care. Digital journeys had to align precisely with practitioner plans and in-centre sessions.
Engagement over time. The experience had to motivate clients across months, not days.
Clarity. Health metrics had to be presented in a way clients could understand and act on.
Our Approach
1. Discovery & Care Model
We mapped the full client journey from onboarding to long-term maintenance, alongside practitioner workflows for assessment, planning and follow-up.
2. Experience Design
We designed streamlined onboarding, personalised dashboards, progress visualisation and simple scheduling, using accessible, healthcare-focused UI patterns.
3. Platform Engineering
We built wellness data management, practitioner communication, booking, progress tracking and body composition analytics on a shared architecture.
4. Compliance & Infrastructure
Health data architecture was aligned with GDPR, and the platform was deployed on AWS with CI/CD workflows.
5. Assurance & Release
Data accuracy, privacy controls and booking flows were validated before launch.
Solution Overview
Personalised Treatment Programmes: journeys tailored to health conditions, goals and practitioner advice
Continuous Progress Monitoring: interactive analytics and progress reports
Practitioner-Guided Care: consultation and follow-up workflows
Smart Appointment Scheduling: in-app booking for consultations and sessions
Health Metrics & Insights: physiological monitoring and personalised dashboards
Privacy & Compliance: GDPR-aligned patient information management
Technical Architecture
Client: Flutter mobile app for iOS and Android
Data: Wellness data management and body composition analytics
Care workflows: Practitioner communication and follow-up systems
Booking: Appointment scheduling infrastructure
Infrastructure: AWS with CI/CD workflows
Security & Compliance
GDPR-aligned health data architecture
Secure storage and handling of patient information
Controlled access for clients and practitioners
Production-grade AWS environment
Outcomes
Production-ready healthcare platform launched successfully
Stronger continuity between digital and in-centre programmes
Higher client engagement through measurable progress tracking
Secure, compliant AWS infrastructure
Greater operational efficiency for practitioners
40–60% improvement in wellness outcomes reported during the initial engagement period
Capabilities Delivered
Healthcare Product Strategy
Wellness Experience Design
Mobile Application Engineering
Patient Engagement Systems
Health Analytics
GDPR-Aligned Data Architecture
Cloud Infrastructure & DevOps
Conclusion
HTC Santé shows how a digital platform can extend high-touch wellness care beyond the treatment room. Personalised journeys, practitioner guidance and measurable progress keep clients engaged between sessions.
Gunpowder Innovations delivered the platform end to end, combining healthcare product thinking, mobile engineering and compliant cloud architecture to support long-term, data-driven lifestyle change.
