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Testing · head to head

Kameleoon vs PostHog

Kameleoon logo

Kameleoon

Testing

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

From
On request
Rated
-
Full reviewWebsite
PostHog logo

PostHog

Technology

The single platform to analyze, test, observe, and deploy new features

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only PostHog 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.; PostHog the free tier covers 1M events, 5K web session recordings and 2.5K mobile recordings per month before usage-based billing starts
  • They diverge on capability: Kameleoon covers Visual A/B test editor, PostHog covers Product analytics.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Kameleoon and PostHog actually diverge.

Attributes where Kameleoon and PostHog differ
AttributeKameleoonPostHog
Starting priceOn requestFree
Pricing modelquoteusage-based
Free tierNoYes
PlatformsWeb, iOS, AndroidWeb, Ios, Android, Api
CategoryTestingTechnology
FoundedUnknown2020

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 PostHog

  • Product analytics
  • Session recording
  • A/B testing
  • Heatmaps
  • SQL access
  • Data warehouse
  • Apps platform
  • Slack

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 PostHog
  • A team running both marketing page tests and product feature rollouts that wants one results engine rather than two disagreeing onesnot PostHog
  • A media site where client-side flicker on a test variant is visibly damaging the reading experiencenot PostHog
  • An organisation re-tendering experimentation after Optimizely or VWO pricing changes and wanting an independent European vendornot PostHog

PostHog

  • Product analyticsnot Kameleoon
  • Feature experimentationnot Kameleoon
  • User behavior trackingnot Kameleoon
  • A/B testingnot Kameleoon
  • Debug production issuesnot 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.

PostHog

  • The free tier covers 1M events, 5K web session recordings and 2.5K mobile recordings per month before usage-based billing starts
  • Accounts without a card on file are limited to 1 project; adding one raises it to 6
  • Data retention is 1 year until a card is added, which extends it to 7 years
  • Support is community-only until the account is on a paid plan
  • Error tracking is capped at 100K exceptions and surveys at 1500 responses per month on the free tier

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

PostHog

Free
  • FreeFree
    • 1M events/month
    • 5K sessions/month
    • Unlimited users
  • Paid$undefined/month
    • $0.00031/event
    • $0.005/session
    • Advanced permissions
  • Enterprise$undefined/month
    • SAML SSO
    • Advanced security
    • Dedicated support

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 PostHog if

  • You need product analytics.
  • You want to start without paying.
  • You work on Web, Ios, Android, Api.
  • You also want session recording.
PostHog review

Questions people ask

Is Kameleoon or PostHog better?
Neither clearly leads. Kameleoon starts at On request and PostHog at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Kameleoon or PostHog?
PostHog has a free tier; the other does not. Paid plans start at On request for Kameleoon and Free for PostHog.
Does Kameleoon or PostHog run on more platforms?
Kameleoon runs on Web, iOS, Android. PostHog runs on Web, Ios, Android, Api.
Can I use PostHog for free?
Yes. PostHog 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 PostHog is typically brought in for.
What can Kameleoon do that PostHog cannot?
Kameleoon covers Visual A/B test editor, Server-side experimentation, Anti-flicker engine, AI personalisation. PostHog covers Product analytics, Session recording, A/B testing, Heatmaps. 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.

PostHog: What does PostHog's free tier include per month?

PostHog free tier includes: 1M analytics events, 5K session replays, 1M feature flag requests, 100K error tracking exceptions, 1,500 survey responses, 1M data warehouse rows, 10K data pipeline events, 100K AI observability events, 500 PostHog AI credits, 10K workflow messages, and 10GB log ingestion. Source: https://posthog.com/pricing

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.

PostHog: How much data retention does PostHog provide on paid plans?

PostHog free tier provides 1-year data retention. Pay-as-you-go plans offer 7-year data retention across all projects, enabling longer historical analysis. Source: https://posthog.com/pricing

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.

PostHog: What percentage of PostHog users stay on the free tier?

PostHog states that 97% of companies use PostHog for free, indicating extensive free tier adoption. However, specific per-unit pricing rates for overages on paid plans are not published. Source: https://posthog.com/pricing

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.

PostHog: When does PostHog provide priority support on paid plans?

PostHog provides email or Slack support for accounts exceeding $2,000/month on pay-as-you-go plans. Specific response times and support SLAs are not detailed on their pricing page. Source: https://posthog.com/pricing

Source
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