november 2025 – march 2026
USA
mental health
- 1 full-stack developer
- 1 project manager
challenge
The client approached us after several unsuccessful development attempts with previous teams. Their existing mobile application was heavily bugged and failed to represent the depth of the program. Frequent crashes and broken user flows led to user drop-offs.
Without a reliable digital product, they couldn’t deliver the full experience at scale. The client needed a stable, user-friendly iOS application that could consistently guide users through the 90-day program, support audio sessions, and provide secure tools for habit tracking and personal journaling.
solution
stabilizing the product through full re-architecture
We began with a comprehensive of the existing application. After evaluating the system, we concluded that fixing the old codebase would be riskier and more expensive than rebuilding it.
Our team built a new architecture from the ground up to support secure user data storage. For the backend, we chose NestJS 11. Its modular architecture enforces clear separation of concerns, ensuring long-term maintainability and seamless team scaling.
The backend infrastructure was deployed on AWS App Runner. Given the sensitive nature of health data, we needed an environment that provides robust security and automatic scaling without complex DevOps overhead.
building a cross-platform frontend
On the frontend, we adopted Expo SDK 54 with React Native and TypeScript. Over‑the‑air updates enabled instant delivery of content, bug fixes, and new program materials.
integrating monetization and analytics tools
We implemented the backend services responsible for authentication, user progress tracking, subscription management, and content delivery.
Subscription and billing logic was integrated via RevenueCat, which enables flexible monetization and reliable subscription event tracking. Analytics integration with Mixpanel allows the client to monitor user behavior and engagement.
implementing a structured 90-day transformation program
One of the central components of the product is a structured 90-day program that gradually guides users. We implemented staged content delivery and progress tracking so that users can clearly see their journey and stay engaged over time.
developing a mindful drink tracking system
The alcohol moderation tracker became one of the app’s core features. It includes session planning, real-time drink tracking, hydration monitoring, limit reminders, and post-session reflections.
Additional tools such as quick journaling, photo logging, and statistical insights help users gradually build awareness around their habits.
introducing personalization and motivational mechanics
During onboarding, the application collects personalized insights about the user’s goals and lifestyle patterns. This data reinforces motivation through personalized reminders, achievements, and progress visualization.
post-launch development & product evolution
After the MVP was successfully launched and proved stable in production, we continued collaborating with the client to expand the feature set, optimize performance, and improve scalability. The application continues to evolve as new content and program features are introduced.
technology stack
Backend
NestJS 11 (Node.js, TypeScript) AWS App Runner AWS S3
Frontend
React Native Expo SDK 54 TypeScript Expo-router React Query React-hook-form + Zod
Database
PostgreSQL Redis
communication
Task management was organized in ClickUp. The client and developer were in daily contact via Slack (messages + calls), and key milestones were discussed in Google Meet.
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