atrby vs PostHog

PostHog is a broad product platform. atrby stays narrow on purpose: traffic, revenue and conversion, without feature flags or experiments to manage.

Side by side.
Pricing and features, line by line.

CapabilityatrbyPostHog
Pricing
What you are billed onPageviews only. Events, goals, revenue and replays never countUsage per product: events, recordings, flag requests and more
Entry price$19 Starter, $39 Growth at 150k pageviewsFree up to 1M events a month, then from $0.00005 per event
Free trial14 days, no cardFree tier that resets every month, no card
Over your plan limitNever locked. Moved up only after two months in a row overBilled per unit, with optional billing limits
Revenue
Payment processorsStripe, Lemon Squeezy, Polar, Paddle, Dodo, Shopify, plus a payment APIStripe only. Chargebee, Polar and RevenueCat listed as coming soon
FunnelsEvery planYes
Product
Cookieless by defaultYes, with an optional Product mode per siteNo, cookies by default
Session replay2,000 a month on Starter, 20,000 on Growth5,000 recordings free a month
AI trafficAI referrals to revenue, plus which AI crawlers read your pagesNot listed
Data retention3 years on Starter, 5+ on Growth7 years on paid plans, 1 year free
API and AI toolsMCP, API and CLIAPI and an official MCP server
Feature flags, experiments, surveysNo, on purposeYes
Open sourceNo, hosted onlyYes, MIT

PostHog details come from posthog.com/llms.txt and posthog.com/pricing, checked on 24 Oct 2026. “Not listed” means we couldn’t find it there, not that it’s impossible. Prices in USD per month. If something is out of date, email hello@atrby.site and we’ll fix it within a day.

What you get with atrby
Only what it does today.

Revenue by source Stripe, Lemon Squeezy, Polar, Paddle, Dodo and Shopify by signed webhook. Each payment is matched to the visit that brought it.
Cookieless by default No cookie banner needed in the default mode. Visitor ids come from a salt that changes daily and is deleted.
AI traffic Visits and revenue from ChatGPT, Perplexity, Claude and Gemini, plus which AI crawlers read your pages.
Funnels and goals Ordered funnels per visit and goals on pages or events, with the revenue of visitors who converted.
Web vitals from real visits LCP, INP, CLS, FCP and TTFB measured by the same script. No extra tag.
Priced on pageviews only From $19 a month. Events, goals, revenue and crawler hits are never metered.
Never locked out Over your tier we keep collecting and the dashboard stays open. A 14-day trial needs no card.
Alerts and a weekly digest Revenue drops, traffic spikes and a broken install by email. A Monday summary of what changed.

We only list what atrby does. Check PostHog’s own site for their current features and pricing.

Run both side by side.
Keep whichever tells you more.

01 Add atrby next to PostHog One script tag in the head. It doesn’t touch PostHog, and both can run together. <script defer src="https://atrby.site/atrby.js" data-site="…"></script>
02 Connect your payments One click for each processor. atrby pulls 90 days of payments on connect, so revenue by source fills in on day one.
03 Compare for 14 days Look at both side by side. Remove PostHog only when the numbers line up, or keep both.

See it with your own traffic.
Free for 14 days.

Install in a minute, connect your processor, and see which sources pay. No card.

Start free trial

PostHog is a trademark of its owner. We are not affiliated.