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Head-to-head · Feature Flag Software

Flagsmith vs GrowthBook

  • Updated Oct 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score Flagsmith #1 in Feature Flag Software 9.4/10 Free plan · 14-day trial Free planFree trial✓ 5 of 5 features Visit Flagsmith
GrowthBook #5 in Feature Flag Software 8.8/10 Free plan Free plan✓ 0 of 5 features Visit GrowthBook

Flagsmith leads on 0 checks, GrowthBook on 0, and 7 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreFlagsmith · 9.4/10
  • Free planboth
  • Free trialonly Flagsmith
  • Most featuresFlagsmith · 5 of 5

Flagsmith scores higher on our rubric for feature flag software: 9.4 against 8.8 out of 10; our editors rank them #1 and #5.

Flagsmith is the better fit for open-source teams needing hosted or self-hosted flags. GrowthBook is the better fit for product teams prioritizing experimentation depth.

  • Flagsmith fits best

    Open-source teams needing hosted or self-hosted flags

  • GrowthBook fits best

    Product teams prioritizing experimentation depth

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Flagsmith 9.4/10 Visit ↗ GrowthBook 8.8/10 Visit ↗
At a glance
Editor score 9.4 8.8
Ranking #1 in Feature Flag Software #5 in Feature Flag Software
Best for Open-source teams needing hosted or self-hosted flags Product teams prioritizing experimentation depth
Pricing model Free plan + paid Free plan + paid
Starting price $40/mo $40/seat/mo
Free plan ✓ ✓
Free trial 14 days —
Deployment Cloud, Self-hosted Cloud, Self-hosted, Mobile
Platforms Web, iOS, Android Web, iOS, Android
Support Email, Live chat, Community, Docs Live chat, Email, Community, Docs
Compliance HIPAA, ISO 27001, GDPR, SSO/SAML, 2FA SOC 2, GDPR, HIPAA, SSO/SAML
Integrations 18 integrations 11 integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Flagsmith 5/5 · GrowthBook 0/5
Targeting rules ✓ (best) Not checked yet
Percentage rollouts ✓ (best) Not checked yet
User segments ✓ (best) Not checked yet
Audit log ✓ (best) Not checked yet
Approval workflows ✓ (best) Not checked yet
Specs
SDK languages JavaScript, React, Next.js, Android/Kotlin, iOS/Swift, Flutter, Python, Java, .NET, Node.js, Ruby, PHP, Go, Rust, Elixir Not checked yet
Environments Not checked yet Not checked yet
Our review
Pros
  • Supports targeting, staged rollouts, remote configuration, and experimentation.
  • Offers hosted, private cloud, and self-hosted deployment options.
  • Includes approvals, audit logs, real-time updates, and broad SDK coverage.
  • Open-source deployment with cloud and self-hosted options
  • Deep testing coverage, including bandits and Bayesian analysis
  • Warehouse-native analysis with broad data and workflow integrations
Cons
  • The Free plan allows 50,000 requests per month and one team member.
  • Scale-Up costs $250/month annually or $300/month monthly.
  • Enterprise is aimed at teams with 20+ members and uses tailored hosting solutions.
  • Starter is limited to 3 users and 1 project
  • Enterprise capabilities use custom pricing
  • Advanced controls such as SSO and SCIM require Enterprise
Our verdict

Flagsmith is an open-source feature flag and remote configuration platform for development teams managing web, mobile, and server-side applications. It supports user and segment targeting, percentage-based and staged rollouts, remote…

Read the review →

GrowthBook is an open-source experimentation and feature-management platform for product, engineering, data, and growth teams. It combines feature flags, controlled rollouts, audience targeting, product analytics, and experimentation in…

Read the review →
  1. FlagsmithFeature Flag Software 9.4Free plan · 14-day trial
  2. GrowthBookFeature Flag Software 8.8Free plan

Strengths and trade-offs

  • Flagsmith — where it wins

    • Supports targeting, staged rollouts, remote configuration, and experimentation.
    • Offers hosted, private cloud, and self-hosted deployment options.
    • Includes approvals, audit logs, real-time updates, and broad SDK coverage.

    Where it doesn't

    • The Free plan allows 50,000 requests per month and one team member.
    • Scale-Up costs $250/month annually or $300/month monthly.
    • Enterprise is aimed at teams with 20+ members and uses tailored hosting solutions.

  • GrowthBook — where it wins

    • Open-source deployment with cloud and self-hosted options
    • Deep testing coverage, including bandits and Bayesian analysis
    • Warehouse-native analysis with broad data and workflow integrations

    Where it doesn't

    • Starter is limited to 3 users and 1 project
    • Enterprise capabilities use custom pricing
    • Advanced controls such as SSO and SCIM require Enterprise

More comparisons

All feature flag software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update