Track your period simply and privately.
Dolunay is a free iPhone app that tracks your cycle. It shows your next period as an honest range, not a single date, and says what the estimate is based on. Your data stays on your phone only.
Free. No account. No ad network, no tracking.
Coming soon to the App Store
What it does
Predictions as ranges
The next period and ovulation are shown as ranges, not one day. Next to each estimate you can see what it is based on.
Late without alarm
If your period is late, Dolunay says so plainly, for example "Your period is 2 days late", and shows the late status without exaggeration.
Fast logging
Log the start of a period with one tap. Add flow, symptoms, mood, discharge, tests and basal temperature if you want.
Privacy tools
App lock with Face ID, Touch ID or passcode, hidden content in the app switcher, discreet notification text and a plain alternative icon.
Moving without an account
Move your data to another phone with a passphrase-encrypted backup file. Bring your history from Apple Health or import period dates from a CSV file.
A report for your doctor
Share your cycle history, averages and flagged notes as a PDF that is prepared on your phone.
It also has a calendar and year view, Home Screen and Lock Screen widgets, reminders, a separate mode for trying to conceive, a pregnancy week counter and fertile-day hiding for people on hormonal birth control. The Apple Health integration is optional.
Your data stays with you
There is no account and no server. Your records are stored on your iPhone only. Dolunay has no analytics, no ad network and no tracking. Read the full privacy policy.
How does it stay free?
Dolunay is free; some screens show one card labelled "Sponsor" from a brand we deal with directly. The card is the same for everyone, is not based on your data, and Dolunay does not track you. There is no subscription or purchase in the app. Brands: see sponsorship.
What Dolunay does not do
Dolunay is not a birth control method. It doesn't diagnose or recommend treatment. It gives no accuracy percentage. Predictions rely on calendar calculation and can change. Check with a doctor before medical decisions.
Questions
Backup, restore, changing phones and deleting your data are covered on the support page. You can also write to support@dolunay.itexpert24.com.