RTDN

Definition

RTDN (Real-Time Developer Notifications) is Google Cloud Pub/Sub topic that Google Play pushes messages to when subscription events occur — renewals, cancellations, expiries, grace period starts, account hold, and more. Instead of polling the Google Play Developer API to check subscription state, you subscribe to Pub/Sub and receive events in near real time.

RTDN is essential for accurate subscription management. Without it, you would not know a subscription was cancelled until the next time the user opens your app. With RTDN, your backend is notified within seconds, and can update entitlement state immediately.

Examples

• A user cancels their monthly subscription on Google Play. Within seconds, Pub/Sub delivers a SUBSCRIPTION_CANCELED RTDN event to Tierux, which marks the entitlement as cancelled and schedules expiry at the period-end date.
• A renewal payment fails and the subscription enters a grace period. The RTDN event triggers a grace-period state, giving the user time to fix their payment method before losing access.
• Tierux processes RTDN events automatically — you configure the Pub/Sub topic once during setup (your AI agent does it), and all subsequent events are handled without any code changes.