Push Notification Services · reliability comparison
Firebase Cloud Messaging vs Knock: which is more reliable? (2026)
Firebase Cloud Messaging is more reliable than Knock, scoring 89.3 vs 60.8 out of 100. Over the last 90 days Firebase Cloud Messaging reported 1 incident and Knock reported 4, with effective uptime of 99.91% and 99.18% respectively. Firebase Cloud Messaging resolves incidents faster on average (3h 51m).
Data updated Nov 1, 2026 · How we score
| Metric | Firebase Cloud Messaging | Knock |
|---|---|---|
| Reliability score | 89.3 | 60.8 |
| Rank (push notification services) | #4 | #9 |
| Uptime (90 days) | 99.91% | 99.18% |
| Incidents (90 days) | 1 | 4 |
| Partial / major outages | 1 | 4 |
| Avg time to resolve | 3h 51m | 8h 49m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Firebase Cloud Messaging and Knock differ
- Knock reported 4× as many incidents as Firebase Cloud Messaging over the last 90 days (4 vs 1).
- Knock had 4 partial or major outages, compared with 1 for Firebase Cloud Messaging.
- Firebase Cloud Messaging fixes problems faster: 3h 51m on average, against 8h 49m for Knock (2.3× quicker).
- Firebase Cloud Messaging's longest outage on record lasted 3d (Mar 8, 2026); Knock's lasted 1d 6h (Oct 1, 2026).
90-day uptime
Firebase Cloud Messaging
Knock
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Firebase Cloud Messaging incidents
- Partial outageSep 1, 2026 · resolved in 3h 51m
RESOLVED: Firebase Cloud Messaging - low availability in North America
Affected: Cloud Messaging
Recent Knock incidents
- Partial outageOct 29, 2026 · resolved in 1h 34m
Affected: In-app feeds and guides
- Partial outageOct 1, 2026 · resolved in 1d 6h
Warehouse message synchronization delayed
Affected: Data warehouse synchronization
- Partial outageSep 21, 2026 · resolved in 1h 3m
Knock dashboard login magic links are unavailable
Affected: Dashboard
- Partial outageAug 31, 2026 · resolved in 1h 45m
Workflow processing and message delivery errors
Affected: Notification delivery, Link and open tracking
- MaintenanceJul 20, 2026 · ongoing
Queueing infrastructure maintenance
Affected: Notification delivery, Webhook delivery
Other push notification services to consider
- Novu · #1 · 100% uptime
- Courier · #2 · 99.99% uptime
- Expo Push Notifications · #3 · 99.93% uptime
- Batch · #5 · 99.83% uptime
See the full most reliable push notification services ranking →