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AB Tasty vs LaunchDarkly

Feature checklists rarely decide anything. What decides it is the pricing metric, who has to write the tests, and which limitation you can live with.

Entry price

Quote on request

Quote only

Free tier available

Free tier

What drives the bill

The metric that actually scales your invoice.

Quote-based annual contracts priced by traffic volume, now sold as part of the merged Wingify platform.

LaunchDarkly has dropped per-seat pricing: Developer is free with unlimited seats, and Foundation is pay-as-you-go on service connections and client-side monthly active users with no platform or seat fee. High-traffic consumer products still get expensive, but now through MAU rather than seats. Enterprise is quote-based.

Free tier

No free tier; demo on request.

Developer plan is free forever with unlimited seats.

Open source

Self-hostable

No-code authoring

Languages

JavaScriptPythonJavaC#PHPCodeless
JavaScriptTypeScriptPythonJavaC#GoRubyPHPSwiftKotlin

Platforms

WebAPIiOSAndroid
WebAPIiOSAndroidDesktop

Fits teams

Scale-up / mid-marketEnterprise
Scale-up / mid-marketEnterprise

Adoption

Established

Wingify (VWO + AB Tasty) · since 2009

Category standard

LaunchDarkly · since 2014

Strengths

  • EU hosting and GDPR posture simplify European procurement.
  • Good balance between marketer-friendly editing and server-side flags.
  • Strong support reputation in European markets.
  • Extremely reliable flag delivery with offline fallbacks — this is infrastructure you can trust in the request path.
  • Best-in-class governance: approval workflows, audit logs, role-based access.
  • Code references and stale-flag detection actually help you remove dead flags.

Limitations

  • Less well known outside Europe, with a smaller partner ecosystem.
  • Quote-based pricing with no self-serve entry.
  • Statistics engine is less differentiated than the warehouse-native platforms.
  • Still the expensive option once client-side MAU volume is real, even after the move off per-seat pricing.
  • Experimentation is competent but less sophisticated than dedicated statistics platforms.
  • Usage-based billing on service connections and MAU is harder to forecast than a seat count.

Best for

European e-commerce and media companies with GDPR-driven vendor requirements.

Engineering organisations where flags are critical infrastructure and governance is required.

All of these integrate with: Segment, Slack.

Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.