A period tracker built on a simple idea: your health data should belong to you.
Most period tracking apps collect intimate health data and share it with advertisers, data brokers, or "research partners." We think that's wrong.
Lunarosa was built because everyone deserves a cycle tracker that respects their privacy. Your period data, your symptoms, your patterns — they're yours. Not a product to be sold.
Privacy isn't a feature — it's the foundation. We encrypt your health data on your device before it reaches our servers. We can't read it even if we wanted to.
We believe in building software that earns trust through transparency, not through marketing promises. If you want to know how your data is protected, read our security page — it's written in plain language, not legalese.
Lunarosa is built by Horizon Digital Engineering LLC, a small software company focused on building tools that respect the people who use them.
We're a small team, and that's intentional. Fewer people means fewer hands on your data. We don't have investors pressuring us to monetize user information. Our business model is simple: free core features, optional Premium for those who want to support us.
Try Lunarosa for yourself.
Get Started — Free