A free, self-hosted Google Analytics replacement
GA4 is free — but you pay in data ownership, sampling, and privacy overhead. Here’s what that really costs, how to migrate, and how Pug replaces it with analytics that stay on your own servers, free forever.
What GA4’s “free” actually costs
You don’t own the data
GA4 processes your visitors’ events on Google’s infrastructure. The reports are yours; the raw data and the relationship with the user are not.
Sampling hides detail
Larger GA4 reports are sampled. To get full, unsampled events back you export to BigQuery — which has its own query and storage costs.
Privacy & GDPR overhead
Sending EU visitor data to a US ad company brings consent-banner and data-transfer questions that self-hosting simply avoids.
How to replace Google Analytics for free
You don’t have to switch overnight. Run a free, self-hosted tool alongside GA, then cut over once it covers what you rely on.
- 1
Stand up a free, self-hosted tool
Run Pug on your own infrastructure — one Go binary with Postgres, ClickHouse, and NATS. Free forever under AGPL-3.0. See the setup guide.
- 2
Add the SDK alongside GA
Drop in the Web SDK and call init(). Autocapture starts immediately, so you can run Pug in parallel with GA4 and compare before you cut over.
- 3
Rebuild the reports that matter
Most teams use a handful of GA reports. Recreate them as Trends, Funnels, and Retention over your raw events — unsampled, on your servers.
- 4
Identify users and cut over
Call identify() to unify anonymous and known activity into profiles, then retire the GA tag once your dashboards cover what you relied on.
Free options worth knowing
There’s no single right tool. Pug is the product-analytics pick; for pure website traffic, lighter web-analytics tools may fit better. Honest shortlist of free, self-hostable options:
- Pug — open-source product analytics (funnels, retention, profiles), self-hosted as one binary
- Plausible CE / Umami — lightweight, privacy-first website traffic analytics
- Matomo — a full self-hosted web-analytics platform and GA replacement
Replacing Google Analytics, answered.
Is there a free Google Analytics replacement?
Yes — several open-source tools self-host for free. Pug is a free, self-hostable product-analytics replacement; Plausible CE, Umami, and Matomo are strong web-analytics options. “Free” here means no licensing fee — you provide the infrastructure.
Isn’t GA4 already free?
GA4 is free to use, but the cost shows up as lost data ownership, sampling on larger reports, BigQuery export bills for raw data, and GDPR overhead. A self-hosted replacement keeps the data and removes those trade-offs.
How do I migrate from Google Analytics?
Run the new tool in parallel with GA, rebuild the handful of reports you actually use, identify your users to unify profiles, then retire the GA tag. There is a step-by-step setup guide for Pug.
Will I lose my historical GA data?
Analytics history does not transfer between tools — events are collected going forward. Keep GA running during the overlap so you retain a reference while your new dashboards fill in.
Is Pug a full GA replacement?
For product analytics, yes — and your data stays yours. For Google Ads attribution and the wider Google ecosystem, GA4 still has the integration edge, so some teams keep GA for ads only.
Replace GA on your own terms.
Free, self-hostable, and open source — run Pug alongside Google Analytics, then cut over when you’re ready. The managed cloud is free during open beta too.