App

The app/* webhooks notify your app about app installation, subscription, and billing events, and each event delivers a different payload.

app/uninstalledTriggered when the app is uninstalled.app/subscriptions_updateTriggered when the recurring charge status update.app/purchases_one_time_updateTriggered when the one-time charge status update.app/subscriptions_approaching_capped_amountTriggered when the usage fee reaches 90% of the capped amount.app/expiredTriggered when the app is expired.