VWO vs Eppo

From $314 per month (indicative, growth tier by traffic)

Quote on request

Priced by monthly tracked users across modules; buying testing plus insights raises the total substantially.

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 · 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.