Kissmetrics vs PostHog (2026): which should you pick?

Pick Kissmetrics if

• Fits if you want to follow individual customers through signup and payment
• Works for small SaaS teams that stay under 100,000 events

Look elsewhere if

• Tight if you stay free: 100,000 events, 3 seats and 3 integrations
• Pricey if you grow, since price follows events and one signup visit can count as six
• Watch out: the campaign report, AI-assistant visitors and exports need Growth
• Watch out: above 5 million events there's no listed price

Pick PostHog if

• Fits if you're a startup that wants analytics, replays and flags within the free allowance
• Works for developers who want to go from a broken session to the error behind it

Look elsewhere if

• Skip it if you just want simple visitor counts without learning a whole toolkit
• Pricey if you need SSO or a HIPAA BAA, which take Boost at $250 a month on top of usage; SAML takes Scale at $750
• Not for you if you want a fixed monthly bill, as everything past the free allowance is metered
• Tight if you stay free, with 1 project, recordings kept a month and events dropped past the limits
• Watch out: self-hosted PostHog is officially unsupported, with no tagged releases or paid support

Kissmetrics

• The campaign Performance report, AI-assistant visitor report and exports need the paid Growth plan.
• Price follows events tracked, and a visitor who views five pages and signs up counts as six events.
• The free plan allows 3 seats and up to 3 active integrations; Growth is unlimited on both.
• Above 5 million events a month there is no listed price.

PostHog

• Usage is metered per product, so the monthly bill moves with traffic; billing limits can be set for each product to cap it.
• SSO enforcement, a HIPAA BAA and unlimited projects need the $250-a-month Boost package on top of usage; SAML sign-in needs Scale at $750.
• The free plan keeps recordings for 1 month and data for 1 year, allows 1 project, and drops events past its limits.
• Self-hosted PostHog is officially unsupported and has no tagged releases; PostHog recommends always running the latest image.

Kissmetrics

Tracking by person

Follows a person across devices rather than counting visits, so a campaign click can be tied to a later signup and payment.

Performance report

Puts campaign, signup and revenue on the same person, with credit given by first touch, last touch or any touch. Growth plan only.

Funnels and activity reports

Ready-made reports show where people drop off step by step and any tracked action over time. Both are on the free plan.

Ask in plain English

A chat answers questions such as where customers come from and opens the matching report. The pricing page lists it on the free plan.

Visitors from AI assistants

A report on visits from ChatGPT, Perplexity, Claude and Gemini, listed as a Growth feature.

Revenue, cohorts and A/B test reports

Revenue, path, cohort, people search, A/B test and product usage reports are part of Growth, which also adds saved groups of people.

PostHog

Product and web analytics

Funnels, trends, retention, user paths and a web analytics dashboard, built from events. The first 1M events a month are free.

Session replay

Recordings of real visits to see where people get stuck, linked to funnels and errors. 5,000 recordings a month are free; recordings are kept 90 days on pay-as-you-go.

Feature flags and experiments

Roll features out to chosen users and run A/B tests, billed together by flag requests, with 1M requests free each month.

Surveys

In-app surveys with 1,500 free responses a month, and white-labeled surveys on the Boost package.

Error tracking and logs

Captures exceptions (100K free a month) and ingests logs (10 GB free), so you can go from a replay to the error behind it.

Data warehouse and pipelines

Syncs data in from Stripe, HubSpot, Salesforce, Postgres and others, and sends events out to tools such as Braze and Klaviyo.

Kissmetrics

• Free$0

  100k events a month, 3 seats, up to 3 active integrations, funnels, activity reports, chat, dashboards and API access.

• Growth$99

  per month for up to 500,000 events, billed monthly

  Unlimited seats and integrations, every report, exports. $198 at 1M events, $299 at 2M, $449 at 3M and $499 at 5M a month.

PostHog

• Free$0

  Full free allowance on every product, unlimited team members, 1 project, community support. Usage stops at the limits, so no surprise bill.

• Pay-as-you-go$0

  plus usage above the monthly free allowance

  No base fee. Analytics from $0.00005 an event and replays from $0.005 a recording, cheaper at volume. 6 projects, 7-year data, email support.

• Boost$250

  per month, plus usage

  Platform package: unlimited projects, SSO enforcement, 2FA enforcement, white labeling, HIPAA BAA and 12 months of replay retention.

• Scale$750

  per month, plus usage

  Everything in Boost plus SAML and OIDC sign-in, approval workflows, real-time alerts and priority support with an 8-hour target.

• EnterpriseCustom

  Sold through sales: role-based access, a dedicated account manager, training, and up to 5 years of replay retention.

• Self-hosted (hobby deploy)$0

  MIT-licensed Docker Compose deployment you host yourself. Officially unsupported, with no paid support plan.

Kissmetrics

• Annual discount

  20% off when billed annually

  The pricing page says Growth is 20% cheaper when billed annually, for example $239 a month billed yearly at 2M events against $299 monthly.

PostHog

• Startups

  $50,000 in credits for early-stage startups

  Companies under 2 years old that have raised less than $5M get $50,000 of PostHog credit for 12 months, plus partner perks. A company email domain is required.

• Nonprofit

  Discount for nonprofits

  PostHog says it gives nonprofits a discount in most cases: create an account, then contact sales with details of the organization.