Cyclink

Privacy-first cycle tracking

Connect your dots,
cycle by cycle.

Cyclink is a cycle tracker for iPhone that lays your skin, energy and training over your own logged cycle and shows you the patterns in your logs. Nothing invented, nothing diagnosed.

Get the launch email Coming soon to the App Store · Android next

One email when it lands, and one when the Android app follows. That is all the list is for. Handled by Tally; delete yourself anytime via the support address.

🔒 No account, ever. Your data stays on your phone and in your iCloud.

Today: your thread, and what your logs show

Today: your thread, and what your logs show

The other half of the product

Private by architecture, not by promise.

Most cycle apps ask you to trust a privacy policy. Cyclink is built so there's nothing on our side to trust: there is no account system and no database of ours for your logs to sit in. Anything read from Apple Health never leaves your phone: not to us, and not even to your iCloud.

Read the privacy policy Ask me anything

Before you ask

Do I need an account?

No, and there isn't one to make. No email, no password, no profile. You open the app and start logging.

Where does my data actually live?

On your iPhone. If you leave iCloud sync on, it is also mirrored into your own private iCloud, which belongs to your Apple Account and not to us. Anything read from Apple Health stays on the device and is never synced anywhere.

Is Cyclink a medical app?

No. Cyclink describes the days you logged and the patterns in them. It never names a condition, and it never tells you what to do. For anything that worries you, a doctor beats any app.

Start with one day. The pattern comes later.

Cyclink is finishing up for the App Store. Put your name down and you'll hear the day it lands: one email at launch, one when the Android app follows, then nothing.

Get the launch email Coming soon to the App Store · Android next

Two emails at most, then nothing. Unsubscribe or ask to be deleted at any time.