PostHog is product analytics — session recordings, feature flags, A/B testing. EngageTrack is marketing attribution — connecting traffic sources to Stripe revenue. Different tools for different questions.
PostHog answers "what happens inside the product?" — which flows users take, where they drop off, which feature flag variant converts better. EngageTrack answers "what happens before the product?" — which blog post, which ad, which tweet drove the customer who just paid you €49. PostHog stores user-level PII and requires a consent banner. EngageTrack stores no PII, sets no cookies, and needs no consent. They can run side by side — PostHog for in-product behavior, EngageTrack for marketing attribution and revenue tracking.
| Feature | PostHog | EngageTrack |
|---|---|---|
| Revenue attribution | ✗ | ✓ |
| Cookie-free tracking | ✗ | ✓ |
| GDPR compliant (no PII) | ✗ (stores PII) | ✓ |
| EU data storage | EU or US | ✓ (Frankfurt) |
| Consent banner required | Yes | No |
| Script size | ~100KB | 3KB |
| Setup time | Hours to days | < 10 min |
| Price | Free tier + $0.00031/event | €5/mo flat |
| Stripe integration | ✗ | ✓ |
| Session recordings | ✓ | ✗ |
| Feature flags | ✓ | ✗ |
| A/B testing | ✓ | ✗ |
PostHog tracks product usage. EngageTrack connects Stripe payments to traffic sources. PostHog can tell you a user clicked 14 buttons. EngageTrack can tell you that user came from a Hacker News comment and paid €49.
PostHog requires SDK integration, event taxonomy design, and feature flag configuration. EngageTrack is a 3KB script tag. Paste it, connect Stripe, and revenue attribution is live.
PostHog stores user-level data: IPs, emails, device fingerprints, session recordings. EngageTrack stores no PII at all — no cookies, no fingerprints, no consent banner. Compliance is the default, not a setting.
Why you might still choose PostHog
PostHog is excellent for product analytics — session recordings, feature flags, A/B testing, user-level funnels, and cohort analysis. If you need to understand how users navigate your product, identify drop-off points in onboarding flows, or run experiments on feature variants, PostHog is purpose-built for that.
If your question is "which channels drive paying customers" — not "how users navigate my product" — EngageTrack answers that in 5 minutes for €5/mo, with zero PII and no consent banner. Many teams run both: PostHog for product, EngageTrack for marketing. They don't overlap.
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