The world’s first women's health app built entirely around privacy
We partnered with 28X to design and build something genuinely new. A period tracking app that puts your data in your control
Most health apps are built on the quiet trade-off of your data for their service. 28X wanted to break that model entirely and track menstrual cycles with clinical accuracy, not share data and meet medical compliance standards. And it had to be delightful to use.
The Big Idea
We built a privacy-first architecture where everything lives locally on the user's device, fully encrypted. Instead of the usual dashboard of charts, we created a brand and digital experience that evolves with you: a visual companion that responds to your cycle in real time. It's data-driven, but genuinely beautiful.
The Results
After lots of hard graft and multiple algorithm rebuilds we have a new technical blueprint for privacy-first health apps, with a white paper in the works to share what we've built.
Kind Words
Kyan has been an exceptional partner across strategy, design and engineering. Their ability to translate complex ideas into a beautifully executed, high-performance product has been instrumental in bringing 28X to life.
Amber Vodegel
CEO & CO-FOUNDER, 28X