Comparison
Blazeway vs. PostHog
PostHog is a full product analytics suite. Blazeway does one thing: help you run experiments, document what you learn, and build a compounding decision history without cookies, consent banners, or a data team.
Last updated: March 2026 · Daniel Janisch, Founder of Blazeway
Start free →Free plan available. No credit card.
The Core Difference
PostHog is an all-in-one product analytics platform built for engineering and product teams who want a single tool for analytics, session replay, feature flags, and experiments. Its A/B testing feature is solid but it exists within a broader platform designed for data-intensive teams.
Blazeway is a decision journal for product experiments. A focused tool for founders and small teams who want to run rigorous A/B tests, document what they learn from each one, and build a structured record of product decisions over time. No analytics pipeline. No data team. No consent management.
PostHog asks: What is happening in your product across every interaction? Blazeway asks: What are you learning from each deliberate experiment and are you capturing that learning?
Feature Comparison
| Feature | Blazeway | PostHog |
|---|---|---|
| A/B Testing | ✅ Yes | ✅ Yes |
| Feature Flags | ❌ No | ✅ Yes (core product) |
| Session Replay | ❌ No | ✅ Yes |
| Product Analytics | ❌ No | ✅ Yes (1M events free) |
| Funnels / Retention | ❌ No | ✅ Yes |
| Hypothesis Board | ✅ Built-in | ❌ Not included |
| Insight Documentation | ✅ Structured, required | ❌ Not included |
| Decision Timeline | ✅ Full history | ❌ Not included |
| LLM Export | ✅ One-click export | ❌ Not included |
| Cookieless Tracking | ✅ No consent banner needed | ❌ Cookie/localStorage based |
| GDPR Compliance | ✅ Privacy-by-design | ✅ With consent setup |
| Setup Time | ~5 min, <2KB snippet | Hours (event instrumentation required) |
| Self-hosting | ❌ No | ✅ Yes (open source) |
| Free Plan | 1,000 events/mo | 1M analytics events, 1M flag requests |
| Paid Plan | $20/month flat | Usage-based from $0.0001/request |
Pricing: Different Models, Different Surprises
Blazeway offers a free plan with 1,000 events/month. The Starter plan is $20/month for 2,000 events/month, with no usage-based surprises.
PostHog has a generous free tier with 1M analytics events/month. Above free limits, pricing is usage-based. Each product (analytics, session replay, feature flags, error tracking) is billed separately. Transparent, but can produce unpredictable bills at scale.
For small teams, PostHog's free tier is very competitive. Blazeway's flat $20 Starter is predictable. Neither is expensive at small scale.
Privacy and GDPR: A Fundamental Architecture Difference
PostHog is GDPR-compliant and offers self-hosting for full data control. But its standard tracking uses localStorage and cookies. You need consent management for EU visitors. Visitors who decline tracking are excluded from experiments. In Germany, where cookie rejection rates often exceed 70%, your experiment data may reflect a minority of your actual audience.
Blazeway tracks without cookies, without localStorage, and without fingerprinting. Visitor assignment is handled server-side via a non-traceable session hash. No consent banner required. Experiments run on your full audience. Learn how cookieless A/B testing works and why it matters for GDPR compliance.
For an EU founder, this isn't a minor implementation preference. If your test audience is only the 20-30% of German users who accept all cookies, your experiment results are systematically biased.
What PostHog Does That Blazeway Doesn't
PostHog offers capabilities well beyond experimentation: session replay (watch exactly what users did in each variant), full product analytics with funnels and retention, feature flags for gradual rollouts, error tracking, and self-hosting for full data sovereignty. Advanced statistics include win probability, confidence intervals, and sequential testing.
If you need an all-in-one analytics suite with A/B testing included, PostHog is a strong choice.
What Blazeway Does That PostHog Doesn't
Hypothesis-first experimentation: Every test starts with a structured hypothesis. Observation, mechanism, prediction.
Mandatory insight capture: When a test ends, Blazeway asks what you learned. That insight is documented as permanent institutional knowledge.
Decision timeline: Your full experiment history forms a chronological record of how your product evolved through data-driven decisions.
LLM export: Export your entire experiment history as a structured prompt for any AI model.
No consent requirement: Test your full audience instead of just the 20-30% who accept tracking.
Zero instrumentation overhead: Running your first test in five minutes requires no prior event setup.
When to Choose PostHog
- · You want a single platform for analytics, session replay, feature flags, AND experiments
- · You have engineering capacity to instrument events and maintain a PostHog integration
- · You want to watch session recordings correlated with experiment variants
- · You need advanced statistical output (win probability, confidence intervals, sequential testing)
- · You want to self-host for data sovereignty
- · Your EU consent management setup is already handled
When to Choose Blazeway
- · You're a founder or small team without a dedicated analytics engineer
- · You're building in the EU and want to test your full audience without consent complexity
- · You want to build a documented learning trail from your experiments
- · You believe capturing why a test won is as important as knowing that it won
- · You want to query your full experiment history with an AI model
- · You need to go from idea to running test in five minutes, not five days
The Honest Summary
PostHog is one of the best all-in-one product analytics platforms available. For developer-led teams who want integrated analytics, session replay, feature flags, and experiments in a single product, it's a compelling choice.
Blazeway is not trying to replace PostHog's analytics capabilities. Blazeway exists because no tool in the market, including PostHog, treats the documented learning path as the core product. PostHog will tell you what happened. Blazeway helps you understand what it means and make sure you don't forget it.
Different tools. Different philosophies. Both real.