If you signed up for Cyrus using your Apple device...
Alternative Cancellation Methods (below)
On your iPhone, iPad, or iPod touch:
Open the Settings application on your device
Tap your name
Tap on Subscriptions
Select the Cyrus subscription
Tap Cancel Subscription
On your Mac:
Open the App Store application
Click the sign-in button or your name at the bottom of the sidebar
Click View Information at the top of the window. Be ready to be asked to sign in again
A page will pop up, then scroll until you see Subscriptions and click on Manage
When you see the Cyrus subscription, click on it
Finally, click on Cancel Subscription. If for some reason you do not see it, that means it has already been cancelled and will not renew