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Head-to-head · Behavior Analytics

PostHog vs Fullstory

  • Updated Oct 2026
  • Both researched from official sources
  • 1 check side by side
Higher score PostHog #3 in Behavior Analytics 9.1/10 Free plan Free plan✓ 0 of 6 features Visit PostHog
Fullstory #7 in Behavior Analytics 8.7/10 Free plan · 14-day trial Free planFree trial✓ 0 of 6 features Visit Fullstory

PostHog leads on 0 checks, Fullstory on 0, and 1 is even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scorePostHog · 9.1/10
  • Free planboth
  • Free trialonly Fullstory

PostHog scores higher on our rubric for behavior analytics: 9.1 against 8.7 out of 10; our editors rank them #3 and #7.

PostHog is the better fit for teams seeking flexible analytics with self-hosting. Fullstory is the better fit for teams investigating behavior across web and mobile.

  • PostHog fits best

    Teams seeking flexible analytics with self-hosting

  • Fullstory fits best

    Teams investigating behavior across web and mobile

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 PostHog 9.1/10 Visit ↗ Fullstory 8.7/10 Visit ↗
At a glance
Editor score 9.1 8.7
Ranking #3 in Behavior Analytics #7 in Behavior Analytics
Best for Teams seeking flexible analytics with self-hosting Teams investigating behavior across web and mobile
Pricing model Free plan + paid Free plan + paid
Starting price — —
Free plan ✓ ✓
Free trial — 14 days
Deployment Cloud, Self-hosted, Desktop Cloud, Mobile
Platforms Web, Windows, macOS, Linux Web, iOS, Android
Support Email, Community, Docs Email, Community, Docs
Compliance SOC 2, GDPR, HIPAA SOC 2, ISO 27001, GDPR, SSO/SAML
Integrations 700+ integrations 18 integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features PostHog 0/6 · Fullstory 0/6
Session replay Not checked yet Not checked yet
Heatmaps Not checked yet Not checked yet
Funnels Not checked yet Not checked yet
Cohort analysis Not checked yet Not checked yet
Retention analysis Not checked yet Not checked yet
Automatic event capture Not checked yet Not checked yet
Our review
Pros
  • Combines event tracking, funnels, session replay, and product insights
  • Includes feature flags, experiments, web analytics, and data-warehouse tools
  • Offers a free tier and self-hosted deployment
  • Replays, heatmaps, click and scroll maps, and rage-click detection
  • Supports iOS and Android app analytics alongside web analytics
  • FullstoryFree includes 30,000 sessions per month and 10 user seats
Cons
  • Paid analytics costs vary with usage rather than a flat rate
  • The Free plan is limited to 1 project
  • Free-plan data retention is 1 year
  • Paid plan prices and session limits are not displayed
  • FullstoryFree limits server-side events to 5,000 per month
  • Plan features vary, so buyers must compare tiers against their analytics needs
Our verdict

PostHog brings product analytics and related data tools into one platform for teams building software, from solo projects to larger companies. Its toolkit includes event capture, configurable tracking, funnel reports, product insights,…

Read the review →

Fullstory captures behavioral data from websites and mobile apps, then offers session replay, heatmaps, click and scroll maps, product analytics, funnels, journeys, and frustration signals. It is aimed at product, engineering, marketing,…

Read the review →
  1. PostHogBehavior Analytics 9.1Free plan
  2. FullstoryBehavior Analytics 8.7Free plan · 14-day trial

Strengths and trade-offs

  • PostHog — where it wins

    • Combines event tracking, funnels, session replay, and product insights
    • Includes feature flags, experiments, web analytics, and data-warehouse tools
    • Offers a free tier and self-hosted deployment

    Where it doesn't

    • Paid analytics costs vary with usage rather than a flat rate
    • The Free plan is limited to 1 project
    • Free-plan data retention is 1 year

  • Fullstory — where it wins

    • Replays, heatmaps, click and scroll maps, and rage-click detection
    • Supports iOS and Android app analytics alongside web analytics
    • FullstoryFree includes 30,000 sessions per month and 10 user seats

    Where it doesn't

    • Paid plan prices and session limits are not displayed
    • FullstoryFree limits server-side events to 5,000 per month
    • Plan features vary, so buyers must compare tiers against their analytics needs
  • PostHog9.1/10 · Free plan

    A flexible analytics toolkit with a free tier, usage-based pricing, and self-hosting.

    Visit PostHogFull verdict →
  • Fullstory8.7/10 · Free plan · 14-day trial

    Replay-led web and mobile analytics with heatmaps, funnels, and a permanent free plan.

    Visit FullstoryFull verdict →

More comparisons

All behavior analytics comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update