Unleash vs VWO

From $75 per seat/month (Pay-As-You-Go, 5-seat minimum self-hosted)

Free tier available

Self-hosted open source is genuinely free within its project and environment caps. Pay-As-You-Go includes 53M API requests a month with $5 per additional million; Enterprise is an annual custom contract adding SSO, audit and change requests.

Priced by monthly tracked users across modules, so buying testing plus insights raises the total substantially. The Wingify rebrand has moved pricing behind Growth/Pro/Enterprise tiers without published figures — get a quote rather than relying on an old VWO list price.

Open-source edition is free and self-hosted with no seat limit, but capped at 1 project, 2 environments and 5,000 flags.

Free starter plan with limited monthly tracked users.

Widely used

Unleash / Bricks Software · since 2014

Widely used

Wingify (VWO + AB Tasty) · since 2010

• Local evaluation means no user data leaves your infrastructure — a strong GDPR position.
• Mature, well-documented open-source core with no artificial crippling.
• Kubernetes and Terraform support for infrastructure-as-code workflows.

• Observation and experimentation in one place shortens the hypothesis loop.
• Visual editor is capable and marketer-friendly.
• Cheaper than Optimizely at comparable traffic.

• Experimentation and analytics are thin; it is a flag system first.
• Self-hosting means you own uptime for something in your request path.
• Smaller ecosystem than LaunchDarkly.

• Module-based pricing means the useful configuration costs much more than the headline.
• Client-side flicker on complex single-page applications.
• Server-side capability lags the flag-first platforms.

Privacy-sensitive or cost-sensitive teams that want flags without sending user data to a vendor.

Conversion-optimisation teams that want testing and behavioural insight from one vendor.