Lyynk
Creating a youth well-being app with emotional tracking and connection tools

From January to June 2024, I collaborated with Lyynk to design a mobile application focused on the mental well-being of young people. After an immersion phase to understand the challenges and the market, I designed the app’s architecture and user journeys. I also conducted user testing and implemented product analytics.
The goal: to provide a strong foundation for the app’s launch and performance monitoring.
Problem statement
Youth mental well-being is a priority, but few tools effectively combine features tailored to their needs with clear communication with adults.
Lyynk wanted to develop an intuitive application capable of integrating a wide range of features (journal, emotional calendar, emergency kit, resolutions) while ensuring seamless navigation for two distinct user profiles: young people and adults.
Role and collaboration
As a Product Designer:
- I conducted user research to understand user expectations and needs.
- I analyzed existing apps on the market to identify strengths and weaknesses.
- I built the product architecture and user flows based on the client’s requirements.
- I designed a complete Design System to facilitate the deployment and modification of features.
- I conducted unmoderated user testing via Maze to assess user flow fluidity.
- I deployed a comprehensive Product Analytics strategy on Mixpanel and trained the Lyynk team on its use.
- I effectively collaborated with 1 Product Manager and 4 developers.
Approach
1. Immersion
Analyzed the needs of both young and adult users, along with a benchmark of competing apps (health, meditation, journaling).
2. Product structuring
Designed a clear architecture to incorporate various features while maintaining a smooth experience.
3. Team training
Provided comprehensive explanations and documentation at each step to ensure Lyynk’s team could operate autonomously in the future.

Challenges
- Designing smooth user flows for two distinct user types.
- Integrating multiple features without overwhelming the user.
- Empowering internal teams to independently monitor analytics and testing processes.

Solution
Here are the main features Lyynk offers. The final UI showcased below has been handled by Arounda Agency.

An emotional calendar assists youths in assessing and tracking their emotional states over time, through their mood, diet and fatigue, fostering self-awareness and emotional intelligence.

A journal enables daily expression through text, images, videos, or audio recordings, allowing users to externalize experiences and reflect on their personal growth.

A rescue kit provides personalized solutions to swiftly support users during moments of emotional discomfort, promoting resilience and well-being. It is also linked to emergency numbers in case of need.

Connection features between youth and adults aim at rebuilding trust through shared activities, agreements, and relationship evaluations.

The blog and forum provide a professional support system, combining expert insights through articles and videos with a safe space for users to share experiences and receive mutual encouragement.
Results and impact
Prototype
A complete and engaging application, tested and ready for development within the specified timeframe.
Product Analytics
A robust analytics strategy to measure performance from launch, supplemented by training videos for the team.
Performance
Successful launch with +300k downloads in the first week and encouraging metrics after 3 months: 15k WAU, 85% activation rate and 5% engagement rate.

“Paul was instrumental in designing our mobile application. His expertise in Product Design and analytics strategy significantly enhanced the user experience and the relevance of our features. His close collaboration with our team made him an invaluable asset for Lyynk. I highly recommend him.”

Ryan Baazia
Product Manager
Key learnings
This project allowed me to strengthen my Product Design skills, particularly in product analytics management and the application of the HEART and AARRR frameworks. I also enhanced my ability to design intuitive interfaces for complex user groups, balancing the needs of young users and their parents.
What I would do differentely
In hindsight, I would involve end-users earlier in the design process to validate some hypotheses during the initial phases of the project. This would have helped avoid time-consuming iterations and ensure better alignment between proposed features and user expectations. Anticipating challenges related to interactions between youth and adults would also have been beneficial.