Push Notification Services · reliability comparison
Firebase Cloud Messaging vs OneSignal: which is more reliable? (2026)
Firebase Cloud Messaging is more reliable than OneSignal, scoring 89.3 vs 77.2 out of 100. Over the last 90 days Firebase Cloud Messaging reported 1 incident and OneSignal reported 5, with effective uptime of 99.91% and 99.75% respectively. Firebase Cloud Messaging resolves incidents faster on average (3h 51m).
Data updated Nov 1, 2026 · How we score
| Metric | Firebase Cloud Messaging | OneSignal |
|---|---|---|
| Reliability score | 89.3 | 77.2 |
| Rank (push notification services) | #4 | #8 |
| Uptime (90 days) | 99.91% | 99.75% |
| Incidents (90 days) | 1 | 5 |
| Partial / major outages | 1 | 3 |
| Avg time to resolve | 3h 51m | 5h 34m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Firebase Cloud Messaging and OneSignal differ
- OneSignal reported 5× as many incidents as Firebase Cloud Messaging over the last 90 days (5 vs 1).
- OneSignal had 3 partial or major outages, compared with 1 for Firebase Cloud Messaging.
- Firebase Cloud Messaging fixes problems faster: 3h 51m on average, against 5h 34m for OneSignal.
- Firebase Cloud Messaging's longest outage on record lasted 3d (Mar 8, 2026); OneSignal's lasted 2h 4m (Aug 4, 2026).
90-day uptime
Firebase Cloud Messaging
OneSignal
- 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 Americaofficial update ↗
Affected: Cloud Messaging
Recent OneSignal incidents
- Degraded performanceOct 14, 2026 · resolved in 1d
Affected: In-App Messages, Push, Analytics & Reporting, Dashboard / UI, Email, Integrations +2 more
- Degraded performanceSep 30, 2026 · resolved in 24m
Database incident - impacting app IDs starting with e
Affected: Dashboard / UI, APIs & SDK Endpoints
- Partial outageSep 22, 2026 · resolved in 26m
Subscription API - Creation Failures
Affected: APIs & SDK Endpoints
- Partial outageSep 18, 2026 · resolved in 34m
Intermittent errors on /api/v1/notifications api
Affected: APIs & SDK Endpoints
- Partial outageAug 4, 2026 · resolved in 2h 4m
Apple push notifications failing in about 3% of casesofficial update ↗
Affected: Push
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 →