Jennis
Edited today at 12:20 PM
Categories
SaaS
Mobile
Design System
Date
2023
Tools
Figma
How Jennis used design to help women understanding their hormones
At Jennis, the mission was simple: to help women take control of their bodies, symptoms, and hormonal health.
But it wasn’t just about sharing information — it was about making it easy to apply in real life. By combining smart insights with an effortless user experience, we created an app that not only educates but also adapts to each woman’s unique cycle.
The challenges
Designing for health isn’t just about showing data. It’s about making scientific insights feel natural, useful, and easy to connect with every day.
Balancing scientific accuracy with intuitive design
How can we share detailed health insights in a way that’s easy to understand and genuinely enjoyable?
Making it a natural part of daily life
How can we design tracking and recommendations to fit seamlessly into women's routines — making them a habit rather than just one more task on their to-do list?
Making period tracking effortless
One of the first challenges we faced was a central action of the app: logging the period.
While this worked for some, others found it limiting—especially if they missed logging for a few days. Additionally, this approach made it harder to view past cycles, which impacted how users engaged with their data.
To improve flexibility, we redesigned the system to allow users to log individual period days, even in the past, and made it easier to access previous cycles.
Through usability testing, we saw a clear improvement—tracking became more intuitive, and engagement with the app increased significantly.
Creating a clear and dynamic cycle representation
Representing the menstrual cycle visually was key, but it had to adapt to different states while staying clear and intuitive.
The cycle isn’t always linear, it shifts based on predictions, actual logs, and missing data. We needed a dynamic design that adapted to different states while remaining intuitive.
Predicted vs. Actual Cycles. How to visual distinctinguish when users log their period or when they don’t and we have to rely on predictions?
Loading State. How to represent the predicted start of next period while waiting for user action?
Period Duration. How to visualize the period estimated duration?
Missed Logging. What to show if users didn't log anything at all?
By testing different approaches that I share in the image below, we refined a circular design that felt intuitive, allowing users to see their cycle phases at a glance while ensuring flexibility for real-life tracking habits.
Impact
By prioritizing usability and personalization, Jennis has transformed the way women engage with their hormonal health. We could measure impact in multiple ways:
User Feedback Sessions. We conducted direct conversations and live testing with users to understand their experiences and challenges.
In-App metrics. We were tracking engagement, symptom logging and workout frequency, quality and consistency.
Hormonal testing. We were partening with health companies to make studies on women using hormonal tests(e.g. temperature measuring).
Interviews. Collecting qualitative data on how the app has influenced lifestyle changes and overall well-being.
By prioritizing usability and personalization, Jennis has transformed the way women engage with their hormonal health. In our many