To cancel a subscription via Apple:
1. Open the Settings app.
2. Tap your name.
3. Tap Subscriptions.
4. Tap the subscription that you want to manage.
5. Tap Cancel Subscription.
If you have purchased your subscription via Play Store or Smule.com - please check the respective article and video for it.
*Please be advised that subscriptions purchased via Apple/Google Play will not be displayed in your Smule profile, they can be managed only via the respective Apple/Google Play account.
In case you have any questions, you can always contact support by clicking on "Submit a request"