Head to head
Firebase Cloud Messaging vs OneSignal
As a push notification API, OneSignal rates higher on the APIbenchmarks Index, 86.4 to 85.6, a 0.8-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | Firebase Cloud Messaging | OneSignal |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 85.6 | 86.4 |
Specifications
| Firebase Cloud Messaging | OneSignal | |
|---|---|---|
| Best for | Free cross-platform push transport | Self-serve push + omnichannel engagement |
| Free tier | Unlimited (free) | Unlimited mobile push + 10k web subs |
| Pricing | Free (transport) | MAU-based ($0.012/MAU) |
| Official SDKs | 11 languages | 12 languages |
Is Firebase Cloud Messaging better than OneSignal?
On the APIbenchmarks Index, OneSignal rates higher (86.4 vs 85.6). It leads on the four weighted criteria, but price is reported separately, so the best choice still depends on your budget.
Verdict in one line
OneSignal leads by 0.8 points (86.4 vs 85.6) and wins 2 of 4 criteria; Firebase Cloud Messaging wins 2.
Winner by criterion
| Criterion | Winner | ||
|---|---|---|---|
| Documentation & DX | 82 | 84 | |
| Reliability | 92 | 85 | |
| Ecosystem & SDKs | 88 | 86 | |
| Accessibility | 80 | 92 |
Choose Firebase Cloud Messaging if… / choose OneSignal if…
- →reliability matters most to you (92 vs 85)
- →ecosystem & sdks matters most to you (88 vs 86)
- →your use case matches its focus: free cross-platform push transport
- →documentation & dx matters most to you (84 vs 82)
- →accessibility matters most to you (92 vs 80)
- →you need broad SDK coverage (12 official SDKs vs 11)
- →your use case matches its focus: self-serve push + omnichannel engagement
Pricing side by side
- Model
- Free (transport)
- Free tier
- Unlimited (free)
- Spark (free)$0
- Blaze (pay-as-you-go)$0 for FCM
- Model
- MAU-based ($0.012/MAU)
- Free tier
- Unlimited mobile push + 10k web subs
- Free$0/mo
- GrowthFrom $19/mo + usage
- ProfessionalCustom (annual)
- EnterpriseCustom (annual)
Vendor-published pricing, verified 2026-06-27 (Firebase Cloud Messaging) and 2026-06-27 (OneSignal).
SDK and language coverage
Both · 4
Android (Kotlin/Java)iOS (Swift/Objective-C)FlutterUnity
Only Firebase Cloud Messaging · 7
Web (JavaScript)C++Admin SDK: Node.jsAdmin SDK: JavaAdmin SDK: PythonAdmin SDK: GoAdmin SDK: C#
Only OneSignal · 8
React NativeExpoCordova / Ionic CordovaCapacitor / Ionic Capacitor.NET MAUIHuaweiAmazonFlutterFlow
Strengths and weaknesses
- +Completely free with no per-message charge and no message-count limit, even at large scale
- +Native, default push channel for Android via Google Play Services plus broad iOS and web support
- +Three flexible targeting modes: individual token, device group, and topic subscription with boolean conditions
- –No published SLA or delivery-latency guarantee; delivery is explicitly best-effort
- –Reported delayed or dropped notifications, especially on iOS and battery-optimized/Doze Android devices
- –Console and notification dashboard are limited, with no built-in segmentation or lifecycle/journey tooling
- +Genuinely generous free tier: unlimited mobile push sends and subscribers, enough segmentation to run real campaigns without paying
- +Very broad SDK coverage (iOS, Android, React Native, Flutter, Expo, Unity, Cordova/Ionic, Capacitor, .NET MAUI, Huawei, Amazon, FlutterFlow)
- +Clean, readable REST API and documentation; reviewers cite ~20-minute first integration
- –Support is the most common complaint, slow, templated, or doc-link responses, especially on free/lower tiers
- –Per-MAU pricing 'scales weirdly' and can get expensive as audience grows even without more sends
- –Analytics are shallower than dedicated marketing suites; attribution gets murky across concurrent campaigns
Firebase Cloud Messaging vs OneSignal: questions
- Which has better documentation, Firebase Cloud Messaging or OneSignal?
- OneSignal scores higher on documentation and developer experience: 84 vs 82 out of 100.
- Which is more reliable, Firebase Cloud Messaging or OneSignal?
- Firebase Cloud Messaging scores higher on reliability: 92 vs 85 out of 100.
- Do Firebase Cloud Messaging and OneSignal have a free tier?
- Firebase Cloud Messaging: yes (Unlimited (free)). OneSignal: yes (Unlimited mobile push + 10k web subs).
- How are Firebase Cloud Messaging and OneSignal priced?
- Firebase Cloud Messaging: Free (transport). OneSignal: MAU-based ($0.012/MAU).
- Which has more official SDKs?
- OneSignal lists 12 official SDKs, Firebase Cloud Messaging lists 11.