Please note that deleting the app will not automatically cancel the subscription. This need to be done separately.
To be able to change or cancel your subscription, open your iPhone and go to:
2. iTunes and AppStore
3. Press Apple ID (at the top of the page)
4. View Apple ID
5. Sign in to iTunes
You will now be able to view all your iTunes purchases and subscriptions, and manage them accordingly.It is possible to cancel a subscription via iTunes on your web browser.
To change or cancel your subscription, open Play Store.
Go to Open the main Menu > Account > Subscriptions > Sleep Cycle, and here you will be able to manage the subscription as you wish.
Do you need to claim a refund? Click here