Best Feature Flags · head-to-head
ConfigCat vs GrowthBook
A sourced, side-by-side comparison for feature flags. ConfigCat has the lower entry price. Every figure links to the vendor's own page and the date we captured it.
ConfigCat has the lower entry price — ConfigCat starts at $0/mo, GrowthBook at $0/mo. Free tier: ConfigCat Yes, GrowthBook Yes. HIPAA: ConfigCat —, GrowthBook Yes.
As of 2026-06-14 · figures link to their source below
Side by side
ConfigCat
$0/mo entryGrowthBook
$0/mo entrySources — ConfigCat: configcat.com (verified 2026-06-14) · GrowthBook: growthbook.io (verified 2026-06-14)
Key features
ConfigCat: Client-side flag evaluation — user data never leaves customer systems; ISO 27001:2022 certified; EU-only data storage option available on all plans; Unlimited seats on every plan including free tier; Audit log retention from 7 days (Pro) up to 2 years (Enterprise)
GrowthBook: Warehouse-native architecture — aggregate data only, no PII ever leaves customer's data warehouse; Advanced statistics: CUPED variance reduction, sequential testing, multi-arm bandits; Visual A/B test editor (no-code experiment creation); Open-source self-hosted option with full feature parity; SOC 2 Type II + ISO 27001 certified