PERIOD.
The cycle app that refuses to sell your data.
PERIOD. launched on July 16, 2026 with 1 votes.
What it does
PERIOD. is the EU-built cycle tracking app. An AI assistant trained on women's health — PMS, PCOS, PMDD, contraception, cycle nutrition. No ads. No data resale. Free forever for the basics. Plus (€3.49/mo) unlocks unlimited AI. Bootstrapped in Amsterdam. Servers in Ireland, no US subprocessors for user data. #1 period tracker in the Netherlands with 30,000 active users and ~150 organic signups a day. The privacy-first alternative to Flo and Clue.
Gebouwd voor vrouwen, niet voor adverteerders. PERIOD. verkoopt je data niet en de basis is gratis. #1-piek in de App Store NL.
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.
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…
Period-Calculator.com2020 · period-calculator.com · ▲63Privacy-first period calendar with smart predictions 📅
Faye - Free Privacy-first Period Tracker2025 · faye.health · ▲20Track your menstrual cycle with accuracy and total privacy
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