Is PostHog or Statsig better?

Neither clearly leads. PostHog starts at Free and Statsig at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, PostHog or Statsig?

PostHog starts at Free and Statsig at Free.

Does PostHog or Statsig run on more platforms?

PostHog runs on Web, Ios, Android, Api. Statsig runs on web, api.

Can I use PostHog for free?

Both have a free tier, so you can try either at no cost before committing.

What is PostHog best used for?

PostHog is most often used for product analytics, feature experimentation, user behavior tracking, a/b testing. Of those, product analytics and feature experimentation are not what Statsig is typically brought in for.

What can PostHog do that Statsig cannot?

PostHog covers Product analytics, Session recording, Feature flags, A/B testing. Statsig covers Feature Flags, Experimentation, Product Analytics, Session Replay.

Software · head to head

PostHog vs Statsig

PostHog

Software

The single platform to analyze, test, observe, and deploy new features

From: Free
Rated: -

Full review Website

Statsig

Software

Unified platform for feature flags, A/B testing, and product analytics

From: Free
Rated: -

Full review Website

The short version

Each has a real cost: PostHog the free tier covers 1M events, 5K web session recordings and 2.5K mobile recordings per month before usage-based billing starts; Statsig pro plan is limited to a single project, requiring Enterprise for multi-project support.
They diverge on capability: PostHog covers Product analytics, Statsig covers Feature Flags.

Where they differ

Only the attributes on which PostHog and Statsig actually diverge.

Attributes where PostHog and Statsig differ
Attribute	PostHog	Statsig
Pricing model	usage-based	freemium
Platforms	Web, Ios, Android, Api	web, api
Founded	2020	Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).

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 PostHog

Product analytics
Session recording
Feature flags
A/B testing
Heatmaps
SQL access
Data warehouse
Apps platform

Only in Statsig

Feature Flags
Experimentation
Product Analytics
Session Replay
Web Analytics
Warehouse-Native Deployment
Role-Based Access & SSO

What people use each for

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

PostHog

Product analyticsnot Statsig
Feature experimentationnot Statsig
User behavior trackingnot Statsig
A/B testingnot Statsig
Debug production issuesnot Statsig

Statsig

Rolling out features gradually with kill switchesnot PostHog
Running A/B tests with statistical rigornot PostHog
Tracing metric regressions to specific releasesnot PostHog
Consolidating analytics and experimentation toolingnot PostHog
Warehouse-native experimentation for data teamsnot PostHog

Where each one falls short

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

PostHog

The free tier covers 1M events, 5K web session recordings and 2.5K mobile recordings per month before usage-based billing starts
Accounts without a card on file are limited to 1 project; adding one raises it to 6
Data retention is 1 year until a card is added, which extends it to 7 years
Support is community-only until the account is on a paid plan
Error tracking is capped at 100K exceptions and surveys at 1500 responses per month on the free tier

Statsig

Pro plan is limited to a single project, requiring Enterprise for multi-project support.
Overage pricing on the Pro plan can become costly for high-event-volume products.
Warehouse-native deployment and advanced access controls are gated behind custom Enterprise contracts.
Free tier session replay and analytics retention are capped, pushing active teams toward paid tiers quickly.

Pricing, plan by plan

PostHog

Free

FreeFree
- 1M events/month
- 5K sessions/month
- Unlimited users
Paid$undefined/month
- $0.00031/event
- $0.005/session
- Advanced permissions
Enterprise$undefined/month
- SAML SSO
- Advanced security
- Dedicated support

Statsig

Free

DeveloperFree
- 2M events/month
- Unlimited flag & config checks
- 50,000 session replays/month
Pro$150/month
- 5M events included, then $0.05 per 1K events
- Advanced experimentation & analytics
- Unlimited analytics retention
Enterprise$undefined/month
- Volume-discounted event/experiment contracts
- Warehouse-native deployment
- SSO & role-based access controls

Which should you pick?

Choose PostHog if

You need product analytics.
You want to start without paying.
You work on Web, Ios, Android, Api.
You also want session recording.

PostHog review

Choose Statsig if

You need feature flags.
You want to start without paying.
You work on web, api.
You also want experimentation.

Statsig review

Questions people ask

Is PostHog or Statsig better?: Neither clearly leads. PostHog starts at Free and Statsig at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, PostHog or Statsig?: PostHog starts at Free and Statsig at Free.
Does PostHog or Statsig run on more platforms?: PostHog runs on Web, Ios, Android, Api. Statsig runs on web, api.
Can I use PostHog for free?: Both have a free tier, so you can try either at no cost before committing.
What is PostHog best used for?: PostHog is most often used for product analytics, feature experimentation, user behavior tracking, a/b testing. Of those, product analytics and feature experimentation are not what Statsig is typically brought in for.
What can PostHog do that Statsig cannot?: PostHog covers Product analytics, Session recording, Feature flags, A/B testing. Statsig covers Feature Flags, Experimentation, Product Analytics, Session Replay.

Answered from the vendors’ own pages

Statsig: What does Statsig cost?

Statsig offers a free Developer tier, a Pro tier at $150/month with 5M included events and $0.05 per 1,000 events after that, and custom Enterprise pricing based on event or experiment volume.

Source

Statsig: Is there a free plan, and what are its limits?

The free Developer plan includes 2M events per month, unlimited flag and config checks, 50,000 session replays per month, and 1-year analytics data retention with unlimited seats.

Source

Statsig: How is usage metered on Statsig?

Statsig meters billable events including exposures with Metric Lifts enabled, log events from SDKs or imports, ingested warehouse metrics, and custom metrics; disabled flag checks are not metered.

Source

PostHog vs Statsig

PostHog

Statsig

The short version

Where they differ

What each one covers

Only in PostHog

Only in Statsig

What people use each for

PostHog

Statsig

Where each one falls short

PostHog

Statsig

Pricing, plan by plan

PostHog

Statsig

Which should you pick?

Choose PostHog if

Choose Statsig if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on PostHog

More on Statsig

Keep looking

Other head to heads