Looking for a OneSignal alternative that keeps your Firebase project? Pushbrain is a Firebase push strategy layer — campaigns, AI copy, and audience health on top of free FCM delivery, without migrating tokens to a new vendor.
| Feature | Pushbrain | OneSignal |
|---|---|---|
| Uses your Firebase project for delivery | ✓ | — |
| FCM delivery cost | $0 (your FCM) | Varies by plan |
| Token ownership on exit | Yours in Firebase | Re-register required |
| AI notification copy | ✓ | — |
| A/B testing with significance | ✓ | Send-time optimization |
| Flat monthly pricing | ✓ | Subscriber-based tiers |
Pushbrain uses a bring-your-own-Firebase model: your device tokens are registered against your own Google Firebase project. If you stop using Pushbrain, your tokens are still yours — they live in your Firebase project and can be used with any FCM-compatible sender. OneSignal stores tokens in its own infrastructure; migrating away requires re-registering all devices through a new SDK.
FCM delivery is free regardless of which service you use. Pushbrain charges for the management layer (dashboards, scheduling, API) at a flat monthly rate, not per-message. OneSignal free tier is generous but applies volume caps that trigger paid plans at higher message counts. For apps with large audiences sending frequently, Pushbrain flat-rate pricing is predictable; OneSignal per-subscriber pricing can scale faster than expected.
Yes. Pushbrain routes iOS notifications through FCM, which uses APNs (Apple Push Notification service) under the hood when your app has Firebase configured for iOS. You upload your Firebase service account once; FCM handles the APNs authentication and delivery.
Pushbrain generates notification copy using an LLM, producing multiple angle-labeled variants per request with automatic deduplication to avoid repeating recent messages. OneSignal offers Intelligent Delivery for send-time optimization but does not generate notification copy. These solve different parts of the notification workflow.
Both platforms support A/B testing. Pushbrain runs a two-proportion z-test on each decision tick and requires statistical significance before declaring a winner, which reduces false positives on small samples. It marks tests "inconclusive" rather than forcing a winner when sample size limits are hit without a statistically significant result.