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Marketing · head to head

Countly vs GrowthBook

Countly logo

Countly

Marketing

Product analytics for mobile and web

From
Free
Rated
-
Full reviewWebsite
GrowthBook logo

GrowthBook

Testing

Open source feature flags and A/B testing that run experiment analysis inside your own data warehouse

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Countly the private cloud plan starts at $175 a month and is described as usage based without stating the unit; GrowthBook warehouse-native analysis is only an advantage if you have a warehouse with clean event data in it; without one, GrowthBook has nothing to compute against and you are back to buying an event-collecting platform.
  • They diverge on capability: Countly covers Event tracking, GrowthBook covers Feature flags.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Countly and GrowthBook actually diverge.

Attributes where Countly and GrowthBook differ
AttributeCountlyGrowthBook
Pricing modelsubscriptionPer user per month
PlatformsWeb, Mobile, ApiWeb, Self-hosted, Docker
CategoryMarketingTesting
Founded2012Unknown

Identical on both: starting price (Free), free tier (Yes), 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 Countly

  • Event tracking
  • Crash reporting
  • Analytics dashboard
  • User retention
  • Open-source
  • Cloud deployment
  • On-premise deployment
  • Web support

Only in GrowthBook

  • Feature flags
  • Warehouse-native analysis
  • Reusable metric definitions
  • Bayesian and frequentist engines
  • CUPED variance reduction
  • Visual editor
  • Self-hosting
  • Guardrail metrics

What people use each for

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

Countly

  • Product analytics for mobile and web applicationsnot GrowthBook
  • Self hosting analytics where data cannot leave the organisationnot GrowthBook

GrowthBook

  • An engineering team that wants feature flags without a per-monthly-active-user bill that grows with product successnot Countly
  • A data team that needs experiment results to reconcile exactly with the metrics reported in its BI toolnot Countly
  • A company with data residency or privacy constraints that cannot send user-level event data to a third-party vendornot Countly
  • Running long-tail experiments where sequential testing and CUPED shorten the time to a decision on low-traffic surfacesnot Countly

Where each one falls short

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

Countly

  • The private cloud plan starts at $175 a month and is described as usage based without stating the unit
  • No event cap, data point limit or user limit is published for either paid plan
  • The self hosted Enterprise edition is custom priced and billed annually
  • Adaptivity and intelligence features are separately priced add ons on the cheaper plan

GrowthBook

  • Warehouse-native analysis is only an advantage if you have a warehouse with clean event data in it; without one, GrowthBook has nothing to compute against and you are back to buying an event-collecting platform.
  • Metrics are SQL, so a marketing or product team without data engineering support cannot define or fix them, and a badly written metric silently produces a confident wrong answer.
  • Cloud Pro bills per seat and then adds CDN request and bandwidth overages, so a high-traffic site can find the variable component exceeds the seat cost it budgeted for.
  • Self-hosting means you own the Mongo database, the SDK endpoint availability and the upgrade path, and a flag service that is down is a production incident, not an analytics inconvenience.
  • The statistics engine exposes real choices, Bayesian versus frequentist, sequential testing, variance reduction, and the tool will not stop a team that configures them wrongly, so it rewards statistical literacy and punishes its absence.

Pricing, plan by plan

Countly

Free
  • Flex (Private Cloud)$175/month
    • Usage-based pricing (not seat-based)
    • Advanced Analytics included
    • Adaptivity and Intelligence available as add-ons
  • Enterprise (Self-Hosted)$null/mo
    • Custom pricing, requires demo booking
    • All capabilities included
    • Deploy on your infrastructure

GrowthBook

Free
  • Open source (self-hosted)Free
    • Unlimited users, feature flags and experiments
    • One project
    • MIT licensed, you run the infrastructure
  • Starter (cloud)Free
    • Up to 3 users
    • 1 project
    • Unlimited flags, experiments and traffic
  • Pro (cloud)$40/month
    • Per seat, up to 50 users
    • 3 projects
    • CDN overage at $10 per million requests beyond the included allowance
  • Enterprise$undefined/year
    • Unlimited users and projects
    • SSO, audit logs and advanced permissions
    • Available on cloud or self-hosted

Which should you pick?

Choose Countly if

  • You need event tracking.
  • You want to start without paying.
  • You work on Web, Mobile, Api.
  • You also want crash reporting.
Countly review

Choose GrowthBook if

  • You need feature flags.
  • You want to start without paying.
  • You work on Web, Self-hosted, Docker.
  • You also want warehouse-native analysis.
GrowthBook review

Questions people ask

Is Countly or GrowthBook better?
Neither clearly leads. Countly starts at Free and GrowthBook at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Countly or GrowthBook?
Countly starts at Free and GrowthBook at Free.
Does Countly or GrowthBook run on more platforms?
Countly runs on Web, Mobile, Api. GrowthBook runs on Web, Self-hosted, Docker.
Can I use Countly for free?
Both have a free tier, so you can try either at no cost before committing.
What is Countly best used for?
Countly is most often used for product analytics for mobile and web applications, self hosting analytics where data cannot leave the organisation. Of those, product analytics for mobile and web applications and self hosting analytics where data cannot leave the organisation are not what GrowthBook is typically brought in for.
What can Countly do that GrowthBook cannot?
Countly covers Event tracking, Crash reporting, Analytics dashboard, User retention. GrowthBook covers Feature flags, Warehouse-native analysis, Reusable metric definitions, Bayesian and frequentist engines.

Answered from the vendors’ own pages

Countly: How much does Countly cost?

Countly's Flex plan (private cloud) starts at $175/month with pay-as-you-go cancellation. Enterprise (self-hosted) requires custom pricing and annual billing. Both plans include advanced analytics, and Flex offers a 14-day free trial.

Source
GrowthBook: Is the self-hosted version actually usable, or crippled?

It is genuinely usable: unlimited users, flags and experiments on one project under an MIT licence. The paid tiers add multiple projects, SSO, audit logs and support.

Countly: What is the difference between Countly Flex and Enterprise plans?

Flex uses usage-based pricing on Countly's cloud with monthly billing. Enterprise requires custom pricing and annual billing, but allows self-hosting on your infrastructure with zero vendor access to data, dedicated support, and included SLA.

Source
GrowthBook: Do I need a data warehouse?

For experiment analysis, effectively yes. Feature flagging works without one, but the reason to choose GrowthBook over a flag-only tool is the warehouse-native statistics.

Countly: Can I add Adaptivity and Intelligence to Countly Flex?

Yes, Adaptivity and Intelligence suites can be added to Flex as needed. Both are included standard with Enterprise plans.

Source
GrowthBook: How does the cost compare with LaunchDarkly or Optimizely?

GrowthBook charges per seat rather than per monthly active user or per tracked event, so cost stops scaling with traffic. At high volume that difference is large.

GrowthBook: Does it support mobile and server-side flags?

Yes, there are SDKs across JavaScript, React, Python, Go, Ruby, PHP, Java, Kotlin, Swift and more, covering client, server and mobile evaluation.

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