I built a privacy-first period tracker but it seems nobody cares
There’s something quietly unsettling about how normal it's become to hand over our most personal data to apps that barely deserve our trust. My wife once showed me a notification she got from her period tracking app. At first, it seemed like a simple reminder. But then came the ads. Not long after, she started getting eerily specific suggestions on other platforms. Things she hadn’t searched for. Things that felt too close. Somewhere, her cycle had been turned into a data point. That bothered me more than I can explain. These apps promise helpful insights. But in return, they take so much.…
I built a privacy-first period tracker but it seems nobody cares launched on March 31, 2025 with 10 votes, #2,743 of 7,215 launches that month and more than 75% of that year's launches.
In plain words
Faye is a period tracking application designed to prioritize user privacy by avoiding data collection and sale practices common in mainstream tracking apps. It is built for people who want menstrual cycle insights without their health information being shared with third parties or monetized through ads and tracking. The app distinguishes itself by operating without the surveillance business model that typical period trackers employ, offering tracking functionality while keeping personal data private.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
There’s something quietly unsettling about how normal it's become to hand over our most personal data to apps that barely deserve our trust. My wife once showed me a notification she got from her period tracking app. At first, it seemed like a simple reminder. But then came the ads. Not long after, she started…
Does a similar job
all alternatives →- IMI made a privacy friendly and simple app to track my menstruation2024 · play.google.com · ▲732
Hey HN, after the app I actually used to track my period wanted me to log in and save my data in the cloud, I decided to write my own. Most apps in this area are based on a subscription model and display far too much information anyway. For me, a simple calendar is enough where I can add a few notes if necessary. So that is the result of my work - a simple design and the data is only saved on the smartphone.
Faye - Free Privacy-first Period Tracker2025 · faye.health · ▲20Track your menstrual cycle with accuracy and total privacy
LadyLog - A period tracker2024 · play.google.com · ▲89Easy to use period tracking app that respects your privacy
Simpluna2021 · simpluna.app · ▲68I've been running Simpluna, a period-tracking app, for six years. It's a company based in Tokyo, Japan, but development and operations are basically a one-person effort. The app is built with React Native (Expo). The defining trait of the app is that it's simple, with no unnecessary features. Recording periods, calculating predictions, and sending notifications — that's the core of it. This space is dominated by big players (Flo, Clue, and in Japan, Luna Luna). Building something similar would have been hopeless, so I made the things those apps don't have my selling point. Optional features…
Zorya - Pregnancy TrackerJun 2026 · getzorya.app · ▲52Private pregnancy tracker. No cloud, no accounts.
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