An easy to use cycle tracker with clear charts you can save as PDF or image - encrypted, ad-free, and available on all your devices.
Install OvaLune(this is a 100% safe webapp, no executable, no app store needed)
Export any chart as a PDF or image, and dive into full cycle statistics - period and cycle length averages, a visual history, even exportable as a Word document. Customize exactly which rows appear, including up to two temperature charts.
Log period, temperature, discharge and symptoms through a clear calendar, with cycle counting built in. Built to support real fertility-awareness methods, including Symptothermal/Sensiplan, Billings, Creighton, Marquette, FEMM, and Standard Days.
All data is encrypted with AES-256 before it ever leaves your device. Add a PIN lock or 2FA for extra protection, and sync securely across every device - it even keeps working offline.
LH tests, discharge, mood, pain and more - plus up to three fully configurable note fields - all tracked in one elegant view.
Mark and monitor your fertile window with clear visual indicators, and let OvaLune predict your next period - with an optional reminder the day before it's due.
Available in English, Dutch, French and German, with light and dark themes, moon phases, and metric or imperial units. Completely free - no subscriptions, no ads. We can't promise we'll never add optional paid features in the future, though.
Your most personal data stays personal - encrypted, never sold, and fully under your control.
Everything is encrypted with AES-256 on your device, and stored encrypted with AES-256-GCM on the server. Not even we can read your health records.
We don't sell or share your data with anyone - and since it's fully encrypted, we couldn't read it to sell even if we wanted to.
Built from the ground up to meet GDPR requirements - your data, your consent, your control, always.
Download a full copy of your data, or permanently delete your account - both just one tap away, no support ticket needed.
Free to install.
Install OvaLune(this is a 100% safe webapp, no executable, no app store needed)
Want to know more before installing, or need help with the app?
Read the user manual
Questions, bug reports, feature ideas - we'd love to hear from you.
Not medical software. OvaLune is for personal cycle charting only - it does not predict fertile periods, provide medical advice, diagnosis, or treatment. Always consult a healthcare professional for health concerns.
