APNs is Apple's direct push notification service. FCM is Google's wrapper that delivers to iOS via APNs while adding analytics and Android support in one SDK.
| Feature | APNs (Direct) | Firebase Cloud Messaging |
|---|---|---|
| Cost | Free | Free |
| Latency | Lowest | Adds a hop |
| Cross-platform | iOS only | iOS + Android + Web |
| Analytics | Build yourself | Built-in |
| Topic / segment messaging | Manual | Built-in |
| Vendor dependency | None |
APNs direct for iOS-only apps that need lowest latency and zero vendor dependency. FCM when you ship iOS + Android and want unified analytics and topic messaging.
Yes — on iOS, FCM ultimately delivers via APNs. The difference is the FCM layer adds analytics, retries, and cross-platform consistency.
Yes, but you'll need to migrate device tokens and rebuild analytics dashboards.