VWO vs Eppo

Free tier available

Quote on request

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.

Quote-based, generally aimed at companies with a data team and a warehouse already in place.

Free starter plan with limited monthly tracked users.

Free tier available for small teams.

Widely used

Wingify (VWO + AB Tasty) · since 2010

Established

Eppo (Datadog) · since 2020

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

• Statistically rigorous — sequential testing, CUPED and diagnostics are core, not add-ons.
• Metrics defined once in the warehouse and reused across every experiment.
• dbt integration fits existing analytics engineering workflows.

• 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.

• Requires a warehouse and a data team; not usable by a product manager alone.
• Feature-flagging capability is lighter than dedicated flag platforms.
• Now part of Datadog, which changes the strategic picture.

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

Data-mature organisations where experiment results must withstand scrutiny.