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 Fly.io
Open Source Product Analytics · Global
Specification Matrix
| Metric | PostHog | Fly.io |
|---|---|---|
| Starting Price | CustomBetter | Custom |
| API Rate Limit | N/A | N/A |
| Target Country | Global | Global |
| Category | Analytics | Cloud Hosting & Edge |
| Compliance | GDPR, SOC2 | SOC2, GDPR |
| Hosting Regions | EU-West, US-East, Self-hosted | US-East, EU-West, AP-Southeast, AF-South-ZA |
| Native Integrations | 6 listedBetter | 5 listed |
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
Fly.io — Key Specs
- ✓Deploy Docker containers to 30+ global regions — closest to ZA is Johannesburg (jnb)
- ✓Machines API launches VMs in under 300ms — ideal for per-request compute isolation
- ✓Fly Volumes provide persistent SSDs for stateful apps like databases and file stores
- ✓Free allowance covers 3 shared-CPU VMs and 3GB of persistent storage permanently
Frequently Asked Questions
What is cheaper, PostHog or Fly.io?+
Both tools start at $0/mo on their entry plans.
Which tool is better for compliance — PostHog or Fly.io?+
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. Fly.io has hosting regions: US-East, EU-West, AP-Southeast, AF-South-ZA. For data residency in Global, check each vendor's data processing agreements.
Data last verified: 26 June 2026
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