Most subscriptions renew automatically after a month or a year, depending on your subscription choice. Take a look here how to cancel recurring subscriptions.
Android - Google Play
You will be notified on a recurring subscription by Google - in most cases, with an e-mail. Check on your subscription here or contact Google Support as Google Play Store handles those subscriptions.
iOS - Apple iTunes
You will be notified on a recurring subscription by Apple - in most cases with an e-mail. Check on your subscription here or contact Apple Support as Apple iTunes / App Store handles those subscriptions.
You will be notified on a recurring subscription by an e-mail message after purchase. The e-mail message is sent to the account owner's e-mail address and contains information on how to cancel the recurring subscription in the Billdu account.
You can check the status of your subscription directly in your account in Settings - Subscription. If you see a red STOP button next to your current subscription, it means it is renewable. By clicking on the STOP button, the next automatic subscription renewal is canceled and you won't be billed again.
Note: Payments at Billdu are processed by Braintree - a payment gateway, which stores your card/paypal details and performs recurring payments. It may happen that your bank or your card-issuer declines a payment - this is something we can't influence. In case of recurring payments, Braintree retries several times to perform a transaction for all unsuccessful payments unless your subscription is canceled.