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Technology · head to head

PostHog vs Zeplin

PostHog logo

PostHog

Technology

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

From
Free
Rated
-
Full reviewWebsite
Zeplin logo

Zeplin

Design

Design handoff and developer collaboration

From
Free
Rated
-
Full reviewWebsite

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; Zeplin the free plan is limited to 1 project and 100 screens and works only in a personal workspace
  • They diverge on capability: PostHog covers Product analytics, Zeplin covers Design specs.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which PostHog and Zeplin actually diverge.

Attributes where PostHog and Zeplin differ
AttributePostHogZeplin
Pricing modelusage-basedsubscription
PlatformsWeb, Ios, Android, ApiWeb, Desktop, Mobile
CategoryTechnologyDesign
Founded20202014

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

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 Zeplin

  • Design specs
  • Asset export
  • Code snippets
  • Design tokens
  • Comments
  • Version control
  • Handoff workflow
  • Accessibility checks

Both cover

  • Slack
  • GitHub
  • GitLab
  • SOC2
  • GDPR
  • 2FA

What people use each for

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

PostHog

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

Zeplin

  • Handing off design specs from Figma or Sketch to developersnot PostHog
  • Sharing screens, assets and style guides with an engineering teamnot PostHog
  • Reviewing and commenting on design versionsnot 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

Zeplin

  • The free plan is limited to 1 project and 100 screens and works only in a personal workspace
  • Free plan AI reviews are capped at 3 per week
  • Role based permissions require the Advanced plan or higher
  • Single sign on, multi factor authentication, activity logs and invoiced billing are Enterprise only
  • Priority 24 hour support is Enterprise only
  • Basic plan caps screens at 1,000 per project and is priced per project rather than per seat
  • Enterprise pricing is by quote with no published rate

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

Zeplin

Free
  • FreeFree
    • 1 project
    • 1 workspace
    • Basic specs
  • Starter$19/month
    • Unlimited projects
    • Multiple workspaces
    • Advanced specs
  • Professional$49/month
    • Everything in Starter
    • Team collaboration
    • Admin 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 Zeplin if

  • You need design specs.
  • You want to start without paying.
  • You work on Web, Desktop, Mobile.
  • You also want asset export.
Zeplin review

Questions people ask

Is PostHog or Zeplin better?
Neither clearly leads. PostHog starts at Free and Zeplin at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, PostHog or Zeplin?
PostHog starts at Free and Zeplin at Free.
Does PostHog or Zeplin run on more platforms?
PostHog runs on Web, Ios, Android, Api. Zeplin runs on Web, Desktop, Mobile.
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 Zeplin is typically brought in for.
What can PostHog do that Zeplin cannot?
PostHog covers Product analytics, Session recording, Feature flags, A/B testing. Zeplin covers Design specs, Asset export, Code snippets, Design tokens. Both handle Slack, GitHub, GitLab, SOC2.

Answered from the vendors’ own pages

PostHog: What does PostHog's free tier include per month?

PostHog free tier includes: 1M analytics events, 5K session replays, 1M feature flag requests, 100K error tracking exceptions, 1,500 survey responses, 1M data warehouse rows, 10K data pipeline events, 100K AI observability events, 500 PostHog AI credits, 10K workflow messages, and 10GB log ingestion. Source: https://posthog.com/pricing

Source
Zeplin: How much does Zeplin Advanced cost?

Advanced costs $12 per seat per month when paid annually, with annual subscriptions offering 2 months off versus monthly rates.

Source
PostHog: How much data retention does PostHog provide on paid plans?

PostHog free tier provides 1-year data retention. Pay-as-you-go plans offer 7-year data retention across all projects, enabling longer historical analysis. Source: https://posthog.com/pricing

Source
Zeplin: What's the difference between Free and Basic plans?

Free covers 1 project with 100 screens and 30-day version history. Basic offers 1-12 projects with practically unlimited screens per project and 1-year version history.

Source
PostHog: What percentage of PostHog users stay on the free tier?

PostHog states that 97% of companies use PostHog for free, indicating extensive free tier adoption. However, specific per-unit pricing rates for overages on paid plans are not published. Source: https://posthog.com/pricing

Source
Zeplin: Can I add unlimited team members?

Yes, Free and Basic plans allow unlimited team members. Advanced/Enterprise assign roles with Reviewers being free and unlimited.

Source
PostHog: When does PostHog provide priority support on paid plans?

PostHog provides email or Slack support for accounts exceeding $2,000/month on pay-as-you-go plans. Specific response times and support SLAs are not detailed on their pricing page. Source: https://posthog.com/pricing

Source
Zeplin: What can Reviewers do?

Reviewers can view designs and documentation and approve requests, but lack access to developer specs.

Source
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