Comparison
Blazeway vs. GrowthBook
They both let you run experiments. Beyond that, they're designed for fundamentally different things and different teams. This page gives you a direct, honest comparison.
Last updated: March 2026 · Daniel Janisch, Founder of Blazeway
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The Core Difference
GrowthBook is a feature flag and experimentation platform built for engineering and growth teams at tech companies. It's powerful, statistical, and designed to scale across large engineering organizations.
Blazeway is a decision journal for product experiments built for solo founders and small teams who want to run rigorous tests, document what they learn, and build a compounding record of product decisions. No data team required.
GrowthBook optimizes for the individual test: statistical rigor, scale, and engineering control. Blazeway optimizes for the sum of all tests: the documented learning path that improves every future decision.
Feature Comparison
| Feature | Blazeway | GrowthBook |
|---|---|---|
| A/B Testing | ✅ Yes | ✅ Yes |
| Feature Flags | ❌ No | ✅ Yes (core product) |
| Hypothesis Board | ✅ Built-in | ❌ Not included |
| Insight Documentation | ✅ Structured per experiment | ❌ Not included |
| Decision Timeline | ✅ Full history | ❌ Not included |
| LLM Export | ✅ One-click export | ❌ Not included |
| Cookieless Tracking | ✅ No consent banner needed | ⚠️ Cookie-based by default |
| GDPR Compliance | ✅ Privacy-by-design | ✅ GDPR compliant (self-hosted) |
| Setup Time | ~5 min, <2KB snippet | Hours to days depending on stack |
| Statistical Engine | Simple, actionable result | Bayesian + Frequentist, CUPED, sequential |
| Visual Editor | ❌ No | ✅ Pro plan |
| Data Warehouse Integration | ❌ No | ✅ Yes |
| Self-hosting | ❌ No | ✅ Open source |
| Free Plan | 1,000 events/mo | Unlimited experiments (3 users) |
| Paid Plan | $20/month | $40/user/month (Pro) |
Pricing: What You Actually Pay
Blazeway offers a free plan with 1,000 events/month. The Starter plan is $20/month for 2,000 events/month, everything else included.
GrowthBook's Starter plan is free with unlimited feature flags and experiments, limited to 3 users and community support. Pro is $40/user/month and adds the visual editor, advanced statistics, and premium support. The self-hosted open-source version is free forever.
If you're a solo founder, Blazeway at $20 is straightforwardly cheaper. If you have a growth team of five engineers, GrowthBook's self-hosted version is free and significantly more powerful from an engineering perspective.
GDPR and Privacy: A Real Difference
GrowthBook is GDPR-compliant but its standard implementation uses cookies for visitor assignment. You'll need to integrate with your consent management platform. If a visitor rejects cookies, they're excluded from your experiment. In Germany, where cookie rejection rates exceed 70-80%, your test data reflects only a self-selected minority.
Blazeway tracks without cookies, without localStorage, and without fingerprinting. Visitor assignment happens server-side via a non-traceable hash. No personal data is collected, which means GDPR's cookie consent requirements don't apply. You run experiments on your full audience. See how cookieless A/B testing works.
For EU founders, this isn't a minor implementation detail. It's the difference between testing your actual users and testing the users who click 'accept all.'
Setup and Complexity
GrowthBook setup requires connecting your data source (Mixpanel, Amplitude, BigQuery, Snowflake), configuring metrics, setting up the SDK, and integrating feature flags into your codebase. For teams with existing data infrastructure, this integrates cleanly. For a solo founder without a data warehouse, the setup overhead is substantial.
Blazeway setup is a single JS snippet under 2KB. You define your variants in a simple config, set a conversion goal, and you're measuring. No data warehouse. No integrations. No dashboard configuration before your first test.
When to Choose GrowthBook
- · You have a dedicated engineering team managing feature flags
- · You want to self-host your experimentation infrastructure
- · You run dozens of concurrent experiments and need advanced statistics (CUPED, sequential testing)
- · You're integrating with an existing data warehouse (BigQuery, Snowflake, Redshift)
- · You need enterprise-grade SSO, approval flows, and team management
When to Choose Blazeway
- · You're a solo founder or small team without a dedicated data team
- · You want to run A/B tests in the EU without cookie consent complexity
- · You believe documented learning compounds more value than raw analytics data
- · You want a permanent record of your product decisions including hypothesis, outcome, and insight
- · You want to export your experiment history to an LLM for cross-test analysis
- · You need to go from idea to running experiment in under five minutes
The Key Question
After this test is done, what will I actually remember and act on?
With GrowthBook, you'll have a statistically valid result and a dashboard entry. That's genuinely useful data.
With Blazeway, you'll have a structured record of your hypothesis, the result, and the insight you extracted. You'll know not just what happened but why. That insight will shape how you approach the next ten experiments.
GrowthBook is built for teams that run experimentation at scale. Blazeway is built for founders who want every experiment to make them smarter.