Umami is an open-source, cookieless analytics tool you can host yourself or use in the cloud. Datasense is hosted for you, and adds JavaScript error tracking, AI crawler stats and ready-made proxy recipes.
Free up to 10k pageviews a month. No card.
Umami is a great pick if you want open source or a big free tier. Datasense is a better fit if you want errors, bots and revenue in one dashboard without running a server.
Side by side, on the things people ask about most. Checked against Umami's own site in October 2026.
| Feature | Datasense | Umami |
|---|---|---|
| Free plan | 10k pageviews a month, 1 site | 100k events a month, 1 site |
| Paid plans from | $9/month for 100k pageviews | $20/month for 1M events |
| No cookie banner needed | Cookies by default; switch any site to cookieless | No cookies |
| Realtime visitors | Updates every second | Realtime view |
| JavaScript error tracking | Last 100 errors per site, with stack and browser | Has Core Web Vitals, not errors |
| Revenue by traffic source | Stripe, Dodo Payments or any provider | Revenue report from events you send |
| Goals and custom events | One line of code or a data attribute | Plus funnels, journeys and retention |
| Proxy to get past ad blockers | Recipes for Next.js, Vercel, Netlify, Cloudflare, Nginx | Documented guides |
| AI crawler and bot tracking | See which AI crawlers read your pages | Not clearly documented |
| Visitor profiles and journeys | Each visitor's pages, visit by visit | Session-based visitor profiles |
| Raw data export | CSV and JSON, any date range | Export and API on Pro |
| Script size | Under 3 KB | About 2 KB |
| Open source / self-host | Open source, self-hostable |
You can run Umami on your own server for free, but then you look after updates, backups and the database. Datasense is hosted for you. You add one script tag and you're done.
Umami tracks Core Web Vitals, but not JavaScript errors. Datasense keeps your last 100 errors with the stack trace and browser. It can also show visits from AI crawlers like GPTBot and ClaudeBot.
Here Umami wins. Its free cloud plan has 100k events a month. Datasense's free plan has 10k pageviews. If you have a busy hobby site and no budget, Umami's free tier goes further.
Umami Cloud is free for 100k events a month on one site, and $20 a month for 1M events. Self-hosting is free. Datasense is free for 10k pageviews, $9 a month for 100k, and $29 a month for 1M pageviews.
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 Umami 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 Umami snippet. Export your old data from Umami 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 siteUmami is a trademark of its owner. Facts checked October 2026; if something changed, tell us at [email protected].