Support

We read everything and reply to anything that needs a reply.

Koko is a period and cycle tracking app for iPhone. It records what you choose to log, estimates when your next period and fertile window may fall, and offers gentle relief and wellbeing content.

Get in touch

Email help.koko@outlook.com with anything at all: a problem, a question, a feature you wish existed.

You can also send feedback from inside the app, under Profile, which attaches your app version and phone model so a problem is easier to reproduce.

Common questions

Where is my data stored?

On your phone, and nowhere else. We cannot see your cycles, symptoms or notes. See the privacy policy.

I lost my phone. Can you recover my entries?

No, and we are sorry. Because nothing is uploaded, there is no copy for us to restore. That is the trade for keeping your health data off the internet.

How do I cancel a subscription?

Through your Apple account: Settings, then your name, then Subscriptions. Cancelling stops the next renewal and you keep access until the period you have paid for ends. We cannot cancel an Apple subscription for you, and refunds are handled by Apple at reportaproblem.apple.com.

Can I use Koko as contraception?

No. Predictions are statistical estimates and are frequently wrong. Koko offers no protection against pregnancy or sexually transmitted infections. See the terms of use.