Independent directory. VektorIndex is not affiliated with or sponsored by any listed vendor. All specifications are sourced from official vendor documentation.
Head-to-Head Specification Audit
PostHog vs Firebase
Open Source Product Analytics · Global
Specification Matrix
| Metric | PostHog | Firebase |
|---|---|---|
| Starting Price | CustomBetter | Custom |
| API Rate Limit | N/A | N/A |
| Target Country | Global | Global |
| Category | Analytics | Database & Backend |
| Compliance | GDPR, SOC2 | SOC2, GDPR |
| Hosting Regions | EU-West, US-East, Self-hosted | US-East, EU-West, AP-Southeast |
| Native Integrations | 6 listed | 7 listedBetter |
PostHog — Key Specs
- ✓Open source: self-host for complete data control — zero GDPR transfer issues
- ✓Feature flags, session replay, A/B testing, product analytics — all-in-one
- ✓EU data residency on cloud plan
- ✓No sampling — 100% of events captured
Firebase — Key Specs
- ✓Realtime Database and Firestore sync data to all connected clients in under 100ms
- ✓Firebase Auth handles 10+ social providers, phone OTP, and anonymous auth out of the box
- ✓Cloud Functions for Firebase execute server-side logic without managing any infrastructure
- ✓Free Spark plan covers 1GB Firestore storage and 50,000 reads/day permanently
Frequently Asked Questions
What is cheaper, PostHog or Firebase?+
Both tools start at $0/mo on their entry plans.
Which tool is better for compliance — PostHog or Firebase?+
Both support GDPR, SOC2.
Which tool is better suited for Global?+
PostHog is evaluated for Open Source Product Analytics in Global with hosting regions: EU-West, US-East, Self-hosted. Firebase has hosting regions: US-East, EU-West, AP-Southeast. For data residency in Global, check each vendor's data processing agreements.
Data last verified: 26 June 2026
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