Statsig
Statsig is a product platform for feature flags experimentation and analytics that helps teams ship safely measure impact and scale program governance with a generous free tier.
Overview
Statsig unifies feature management with trustworthy experimentation so product and engineering teams can roll out changes progressively test ideas and understand causal impact quickly. Client and server SDKs support typed flags dynamic configs and experiments across web mobile and backend services. CUPED sequential testing and guardrails reduce false positives while auto analysis creates readable results and decision logs.
Product analytics link events cohorts and funnels to experiments so teams see both what happened and why. Integrations connect warehouses and BI to avoid silos and a governance layer covers approval workflows experiment registries and audit trails. Pricing includes a free tier suitable for startups followed by paid plans that scale with volume and capabilities.
In 2025 Statsig announced an acquisition agreement while continuing independent operations which broadened interest and integrations. Teams adopt it to replace fragmented flag and test stacks with one system that improves velocity alignment and decision quality.
Key features
- Feature flags and staged rollout: Ship safely with kill switches dynamic configs and gradual exposure across clients and servers
- Trustworthy experiments engine: CUPED sequential tests and guardrails improve power and reduce false positives in real use
- Product analytics integrated: Link events funnels and cohorts to tests so owners see impact not just metrics in isolation
- Auto analysis and readable results: Reports highlight winners guardrails and confidence with clear decision logs for teams
- Governance registry and approvals: Avoid collisions with experiment registries review workflows roles and audit trails
- Warehouse and BI integrations: Sync events identities and results with data platforms so insights flow to existing dashboards
Best for
- Roll out risky backend changes with flags and step up exposure as error rates and guardrails stay within limits
- Test onboarding flows and pricing pages then read results with power improvements and clear decision logs
- Connect analytics events to experiments to see causal effects on retention and revenue not just clicks
- Run multi variant and holdout tests for recommendations notifications and ranking logic across devices
- Adopt experiment registries and approvals to coordinate many squads working on shared surfaces
- Push results to BI and docs so leadership reviews share the same metrics and decisions across the org
- Enable mobile teams to ship behind flags and coordinate server toggles for coherent experiences
- Replace separate flag tools and testing tools with a single governed system
Capabilities
Flags and Configs
Define typed flags dynamic configs and rollouts with SDKs across platforms use kill switches and exposure schedules to protect users.
Stats Engine
Run A B and multi variant tests with CUPED sequential methods and guardrails to reduce error rates and increase decision power.
Product Analytics
Link events cohorts and funnels to experiments and generate readable reports so teams align on what changed and why.
Program Control
Use registries approvals and audit logs to coordinate many experiments and prevent collisions across journeys and squads.
Frequently Asked Questions
Is there a free plan?
Yes a free tier exists for core capabilities and is suited to small teams and pilots confirm current limits on the pricing page.
How are paid plans structured?
Paid offerings scale with usage and advanced features pricing is provided by quote for larger volumes and enterprise needs.
Can we integrate our warehouse?
Yes Statsig supports event ingestion and exports to common data platforms and BI so teams avoid metric silos.
What methods improve accuracy?
Statsig applies CUPED sequential testing and guardrails which together reduce variance and false positives in practice.
How do we prevent collisions?
Use the experiment registry approvals and roles to coordinate tests and reduce interference across surfaces and cohorts.
Is there a server SDK?
Yes client and server SDKs cover major languages and platforms including mobile so rollouts stay consistent.
What if we were acquired?
Statsig announced an acquisition agreement in 2025 while operating independently check the blog for status and roadmap updates.
Is PII protected?
Use role controls and data policies to restrict access and apply redaction where required confirm details in your DPA and settings
