The mylune Journal
Thoughts on privacy, women's health, and building something worth trusting.
The best private period trackers in 2026, honestly compared
The only thing that decides whether a period tracker is private is where your data lives. We compare the major apps on that one axis, using the 2026 Mozilla review, and explain where mylune fits.
Why your period data is more sensitive than your banking data
Financial fraud can be reversed. Health data exposure cannot. A look at why cycle data carries a unique and permanent risk profile, and what it means for the apps that collect it.
Building a period app without a server: how we did it
On-device architecture is simple to describe and hard to build well. This is the story of the technical choices we made to ensure that health data never leaves the phone, even by accident.
mylune in 18 languages: what real localisation actually means
Dropping a JSON file into a translation tool is not localisation. We spent months on Tamil, Hindi, Telugu, Bengali, and Marathi to understand what culturally accurate women's health language actually sounds like.
Why mylune has no ads, and never will
Ad supported health apps are not a business model with privacy attached. They are a business model that requires privacy to be absent. Here is what we built instead.
Stealth Mode: when your health app needs to be invisible
For many women, the question is not how good the cycle tracker is. It is whether anyone else can see that the cycle tracker is on her phone. Stealth Mode is for that.
New posts, when they're ready
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