Help & support
Are predictions accurate?
They're estimates based on your history. With fewer than 3 cycles logged or irregular cycles, ranges are wider. They are not contraception and cannot confirm ovulation.
Where is my data stored?
In private mode, only in this browser, encrypted. With an account, also on our servers, encrypted at rest. See the Privacy Policy for details.
I changed phones. How do I get my data back?
If you use an account, sign in on the new phone. In private mode, restore from a JSON backup you exported earlier.
Why don't I get notifications on iPhone?
Install the app to your Home Screen first (iOS 16.4+), then allow notifications from the Reminders screen.
Contact support
Please don't include health details in support messages.