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Testing · head to head

Kameleoon vs LaunchDarkly

Kameleoon logo

Kameleoon

Testing

A/B testing and feature experimentation with a hybrid client and server-side engine

From
On request
Rated
-
Full reviewWebsite
LaunchDarkly logo

LaunchDarkly

Technology

Ship fast. Rest easy.

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only LaunchDarkly has a free tier, so it costs nothing to try first.
  • Each has a real cost: Kameleoon no rate card is published. Reported entry pricing around several hundred euros a month for the limited prompt-based tier comes from third parties rather than Kameleoon, so any budget you build before contacting sales is a guess.; LaunchDarkly pricing scales rapidly with monthly active users, becoming expensive at scale
  • They diverge on capability: Kameleoon covers Visual A/B test editor, LaunchDarkly covers Progressive rollouts.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Kameleoon and LaunchDarkly actually diverge.

Attributes where Kameleoon and LaunchDarkly differ
AttributeKameleoonLaunchDarkly
Starting priceOn requestFree
Pricing modelquoteUnknown
Free tierNoYes
PlatformsWeb, iOS, AndroidWeb, Cloud, APIs
CategoryTestingTechnology
FoundedUnknown2014

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Kameleoon

  • Visual A/B test editor
  • Server-side experimentation
  • Anti-flicker engine
  • AI personalisation
  • EU data hosting
  • Shared audiences
  • Statistics options

Only in LaunchDarkly

  • Progressive rollouts
  • User targeting
  • A/B testing
  • Kill switches
  • Audit log
  • Multi-environment
  • SDKs for all platforms
  • Jira

Both cover

  • Feature flags

What people use each for

The jobs each tool is most often brought in to do.

Kameleoon

  • A European retailer whose legal team requires EU-hosted experimentation data and has ruled out US-only vendorsnot LaunchDarkly
  • A team running both marketing page tests and product feature rollouts that wants one results engine rather than two disagreeing onesnot LaunchDarkly
  • A media site where client-side flicker on a test variant is visibly damaging the reading experiencenot LaunchDarkly
  • An organisation re-tendering experimentation after Optimizely or VWO pricing changes and wanting an independent European vendornot LaunchDarkly

LaunchDarkly

  • Progressive deliverynot Kameleoon
  • Feature experimentationnot Kameleoon
  • Risk mitigationnot Kameleoon
  • Performance optimizationnot Kameleoon
  • Infrastructure migrationnot Kameleoon

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Kameleoon

  • No rate card is published. Reported entry pricing around several hundred euros a month for the limited prompt-based tier comes from third parties rather than Kameleoon, so any budget you build before contacting sales is a guess.
  • Web experimentation, feature experimentation and personalisation are licensed as separate capabilities, so the unified platform story costs materially more than the entry configuration most buyers are first quoted.
  • The partner and agency ecosystem is concentrated in France and continental Europe; a buyer in North America or Asia will find fewer implementation specialists and less community knowledge than for Optimizely or VWO.
  • The integration catalogue is smaller than the market leaders, so a stack built on less common analytics or CDP tooling may need custom work that a larger vendor would cover natively.
  • Client-side visual testing still carries the structural problems of the approach, including performance cost and single-page-application fragility; the anti-flicker engine reduces the symptom but does not remove the dependency on the DOM staying stable.

LaunchDarkly

  • Pricing scales rapidly with monthly active users, becoming expensive at scale
  • Limited seats for engineers on standard plans, forcing upgrade to enterprise
  • Advanced features like experimentation and audit logs require higher-tier plans
  • Occasional reliability issues and backend delays reported by users

Pricing, plan by plan

Kameleoon

On request
  • Kameleoon$undefined/year
    • Priced on monthly tested users and features licensed
    • Web experimentation, feature experimentation and personalisation licensed separately
    • Free trial of the prompt-based experimentation feature, with data not retained afterwards

LaunchDarkly

Free
  • DeveloperFree
    • Unlimited seats
    • Unlimited feature flags
    • A/B tests and experiments
  • Foundation$undefined/mo
    • $12 per connection
    • $10 per 1K MAU
    • Targeted segmentation
  • Enterprise$undefined/mo
    • Custom pricing
    • Advanced automation
    • Compliance features

Which should you pick?

Choose Kameleoon if

  • You need visual a/b test editor.
  • You work on Web, iOS, Android.
  • You also want server-side experimentation.
Kameleoon review

Choose LaunchDarkly if

  • You need progressive rollouts.
  • You want to start without paying.
  • You work on Web, Cloud, APIs.
  • You also want user targeting.
LaunchDarkly review

Questions people ask

Is Kameleoon or LaunchDarkly better?
Neither clearly leads. Kameleoon starts at On request and LaunchDarkly at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Kameleoon or LaunchDarkly?
LaunchDarkly has a free tier; the other does not. Paid plans start at On request for Kameleoon and Free for LaunchDarkly.
Does Kameleoon or LaunchDarkly run on more platforms?
Kameleoon runs on Web, iOS, Android. LaunchDarkly runs on Web, Cloud, APIs.
Can I use LaunchDarkly for free?
Yes. LaunchDarkly has a free tier, so you can try it without paying. Kameleoon starts at On request.
What is Kameleoon best used for?
Kameleoon is most often used for a european retailer whose legal team requires eu-hosted experimentation data and has ruled out us-only vendors, a team running both marketing page tests and product feature rollouts that wants one results engine rather than two disagreeing ones, a media site where client-side flicker on a test variant is visibly damaging the reading experience, an organisation re-tendering experimentation after optimizely or vwo pricing changes and wanting an independent european vendor. Of those, a european retailer whose legal team requires eu-hosted experimentation data and has ruled out us-only vendors and a team running both marketing page tests and product feature rollouts that wants one results engine rather than two disagreeing ones are not what LaunchDarkly is typically brought in for.
What can Kameleoon do that LaunchDarkly cannot?
Kameleoon covers Visual A/B test editor, Server-side experimentation, Anti-flicker engine, AI personalisation. LaunchDarkly covers Progressive rollouts, User targeting, A/B testing, Kill switches. Both handle Feature flags.

Answered from the vendors’ own pages

Kameleoon: Does Kameleoon publish pricing?

No. Pricing depends on monthly tested users and which capabilities you licence, and requires a sales conversation.

LaunchDarkly: What does the free Developer plan include?

The free Developer plan includes unlimited seats, unlimited feature flags, A/B tests and experiments, 30 SDKs, 10 million logs and traces, 5,000 session replays and errors, and 14 days of data retention.

Source
Kameleoon: Can I keep data in the EU?

Yes. EU hosting and a GDPR-first consent model are among the main reasons European buyers shortlist it.

LaunchDarkly: How does LaunchDarkly pricing scale?

Foundation plan pricing is $12 per connection plus $10 per 1,000 Monthly Active Users (MAU). Enterprise and Guardian plans have custom pricing based on usage, advanced features, and compliance requirements.

Source
Kameleoon: Does it do feature flags as well as A/B tests?

Yes, through server-side SDKs, sharing audiences and results with the visual testing side.

LaunchDarkly: Does LaunchDarkly integrate with Jira and Slack?

Yes, LaunchDarkly integrates with Jira Cloud, allowing you to link feature flags to Jira issues and create issues from observability data. It also integrates with Slack for flag notifications and allows authorized members to trigger flag changes from Slack.

Source
Kameleoon: How does it compare with Optimizely?

Similar capability at a smaller scale. Kameleoon's advantages are European data residency and an independent vendor; Optimizely's are ecosystem size and partner availability.

LaunchDarkly: What is dark launching and how does LaunchDarkly enable it?

Dark launching keeps code changes hidden in production until ready to enable. LaunchDarkly enables this through feature flags that let teams safely test code in production before rolling out to users.

Source
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