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testcritic

ConfigCat vs Unleash

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

From $110 per month (Pro)

Free tier

From $75 per seat/month (Pay-As-You-Go, 5-seat minimum self-hosted)

Free tier

What drives the bill

The metric that actually scales your invoice.

Plans run Free, Pro $110, Smart $325, Enterprise $900 and Dedicated $4,500 a month. Unlimited seats and unlimited flag reads on every plan, including free — unusual and genuinely valuable for wide access; paid tiers mainly raise flag, environment and product limits.

Self-hosted open source is genuinely free within its project and environment caps. Pay-As-You-Go includes 53M API requests a month with $5 per additional million; Enterprise is an annual custom contract adding SSO, audit and change requests.

Free tier

Free forever plan with a monthly config-request allowance and unlimited members.

Open-source edition is free and self-hosted with no seat limit, but capped at 1 project, 2 environments and 5,000 flags.

Open source

Apache-2.0 (core)

Self-hostable

No-code authoring

Languages

JavaScriptTypeScriptPythonJavaC#GoRubyPHPSwiftKotlinDart
JavaScriptTypeScriptJavaPythonGoC#RubyPHP

Platforms

WebAPIiOSAndroidDesktop
WebAPIiOSAndroid

Fits teams

Solo / side projectStartupScale-up / mid-market
StartupScale-up / mid-marketEnterprise

Adoption

Established

ConfigCat · since 2018

Widely used

Unleash / Bricks Software · since 2014

Strengths

  • Unlimited team members at every tier, so product and support can toggle flags too.
  • Very simple to adopt — an afternoon, not a project.
  • Broad SDK coverage including Dart and Elixir.
  • Local evaluation means no user data leaves your infrastructure — a strong GDPR position.
  • Mature, well-documented open-source core with no artificial crippling.
  • Kubernetes and Terraform support for infrastructure-as-code workflows.

Limitations

  • No experimentation or analytics to speak of.
  • Limited targeting sophistication compared to LaunchDarkly.
  • Small vendor.
  • Experimentation and analytics are thin; it is a flag system first.
  • Self-hosting means you own uptime for something in your request path.
  • Smaller ecosystem than LaunchDarkly.

Best for

Teams that want simple, cheap flags accessible to the whole company.

Privacy-sensitive or cost-sensitive teams that want flags without sending user data to a vendor.

All of these integrate with: Slack, Jira, Datadog, Terraform.

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