PostHog is a big product platform: analytics, session replay, feature flags, experiments, surveys and more. Datasense does one job, web analytics, and keeps it simple. If you only need to know who visits and what breaks, it's a lot less to learn.
Free up to 10k pageviews a month. No card.
PostHog is the better tool if you want product analytics, replays and feature flags in one place. Datasense is the better tool if you want a small script, simple monthly plans and a dashboard anyone on the team can read.
Side by side, on the things people ask about most. Checked against PostHog's own site in October 2026.
| Feature | Datasense | PostHog |
|---|---|---|
| Free plan | 10k pageviews a month, 1 site | 1M events a month, plus replays and more |
| Paid plans from | $9/month for 100k pageviews | Pay as you go after the free tier |
| No cookie banner needed | Cookies by default; switch any site to cookieless | Uses a cookie by default; cookieless mode is optional |
| Realtime visitors | Updates every second | Live events |
| JavaScript error tracking | Last 100 errors per site, with stack and browser | Built-in error tracking |
| Revenue by traffic source | Stripe, Dodo Payments or any provider | Stripe through a data warehouse source |
| Goals and custom events | One line of code or a data attribute | Events and actions |
| Proxy to get past ad blockers | Recipes for Next.js, Vercel, Netlify, Cloudflare, Nginx | Managed reverse proxy |
| AI crawler and bot tracking | See which AI crawlers read your pages | Bot and AI bot traffic |
| Visitor profiles and journeys | Each visitor's pages, visit by visit | Person profiles |
| Raw data export | CSV and JSON, any date range | SQL and API |
| Script size | Under 3 KB | About 57 KB |
| Open source / self-host | Open source, self-hostable |
PostHog can answer almost any product question, but you have to set up insights and dashboards first. Datasense works the moment you add the script. Visitors, pages, sources, goals, errors and revenue are already there.
PostHog's web script is around 57 KB and uses a cookie by default. The Datasense script is under 3 KB, so it's lighter on your pages. It also uses cookies by default, and one setting switches it to cookieless mode if you don't want a banner.
PostHog's free tier is generous, and after that you pay per event. Datasense has three flat plans, so you always know the bill: free, $9 or $29 a month.
PostHog gives you 1M events a month free, then charges per event with no base fee. Datasense is free up to 10k pageviews, $9 a month for 100k, and $29 a month for 1M pageviews. PostHog's free tier is bigger. Datasense is simpler to budget.
It takes about five minutes, and you don't have to turn anything off on day one.
Create a free account and paste one script tag into your site's <head>. Leave PostHog where it is for now.
Compare visitors, top pages and sources. Datasense often shows more visitors once the proxy is on, because ad blockers stop blocking it.
When you're happy, delete the PostHog snippet. Export your old data from PostHog first if you want to keep it.
Or see all web analytics tools on one page.
Add one script tag, compare the numbers, then keep the one you like. The free plan is enough to test it.
Add your sitePostHog is a trademark of its owner. Facts checked October 2026; if something changed, tell us at [email protected].