# Satsu

> Cookieless, privacy-first web analytics — no consent banner needed. Sessions are derived from a daily-rotating fingerprint, never stored; no cookies, no persistent visitor IDs.

## Facts

- What: Cookieless, privacy-first web analytics — no consent banner needed.
- Why no banner: Sessions are derived from a daily-rotating fingerprint, never stored; no cookies, no persistent visitor IDs.
- Hosting: EU-hosted (Hetzner, Finland).
- Install: one script tag, under 3 KB; works with HTML, Next.js, React / Vite, Vue / Nuxt, Astro.
- Free: free forever, no card: 10,000 events/month, 2 sites, 3 months retention, 1 goal.
- Pro: €6/month or €60/year: 500,000 events, unlimited sites, 2 years retention, 5 team members.
- Business: €19/month or €190/year: 5,000,000 events, 5 years retention, unlimited team members.
- Extras: Live visitors; AI-assistant traffic as its own channel; SEO, accessibility, security, GDPR and performance audits; Uptime and TLS monitoring; Public read API (Pro and up).
- Not: not open source, not self-hostable, no session recordings, no persistent identifiers.
- Pricing: https://satsu.pro/pricing

## Install

```html
<script defer src="https://track.satsu.pro/tracker.js" data-site="YOUR_ID"></script>
```

- `data-site` (required): Your site ID. Without it the tracker does nothing.
- `data-api` (optional): Override the ingest endpoint. Defaults to the script's own origin + /e, so you normally never set this.
- `data-track-paths` (optional): Comma-separated path prefixes to limit tracking to (e.g. /,/docs,/blog). Omit to track every path.

- HTML: add the same script tag to the root layout — https://satsu.pro/docs/install#plain-html
- Next.js: add the same script tag to the root layout — https://satsu.pro/docs/install#nextjs-app-router
- React / Vite: add the same script tag to the root layout — https://satsu.pro/docs/install#react-vite--cra
- Vue / Nuxt: add the same script tag to the root layout — https://satsu.pro/docs/install#vue--nuxt
- Astro: add the same script tag to the root layout — https://satsu.pro/docs/install#astro

## Privacy

Sessions are derived from a daily-rotating fingerprint, never stored; no cookies, no persistent visitor IDs. A visit is matched to a session by a hash of site, IP address, user agent, the current day and a secret salt; because the day is part of it, the hash changes every 24 hours, so visits cannot be linked across days; raw IP addresses and user agents are never stored, and the hash cannot be reversed to a person.

Never collected or stored: cookies, localStorage IDs, cross-day fingerprints, session recordings, mouse movement, PII in event properties, reverse-IP company lookups.

Details: https://satsu.pro/docs/privacy · what is tracked: https://satsu.pro/docs/what-we-track

## Compare

### Satsu vs Google Analytics

- Price — Satsu: €6/mo (500k events) | Google Analytics: Free (ad-funded)
- Cookie consent banner — Satsu: Not needed | Google Analytics: Required in EU
- Data sampling — Satsu: Never | Google Analytics: At scale
- AI-traffic channel — Satsu: Native, per assistant | Google Analytics: Buried
- Data ownership — Satsu: Yours, EU-hosted | Google Analytics: Google's
- SEO + accessibility audits — Satsu: Built in | Google Analytics: No
- Setup — Satsu: One script tag | Google Analytics: Tag + consent + config
- E-commerce depth — Satsu: Focused | Google Analytics: Very deep

Why Satsu:
- No cookie banner, no lost visitors: GA4 needs consent in the EU, and every visitor who clicks 'reject' vanishes from your numbers. Satsu stores no personal data, so there's nothing to consent to — you count everyone.
- Your data isn't the product: GA is free because your visitors' data fuels Google's ad business. Satsu is a paid product; your data is yours, EU-hosted, never sold or sampled.
- AI traffic as its own channel: GA4 added an AI-assistant channel in 2026, but it's buried in a marketing-first UI. Satsu surfaces ChatGPT, Perplexity, Claude and Gemini natively in a dashboard built for builders, not marketers.
- More than analytics: Satsu also audits your SEO and accessibility and monitors uptime — one privacy-first place instead of GA4 plus three other tools.

Where Google Analytics is stronger: GA4 is free and hard to beat on raw cost if privacy isn't a concern. It has far deeper e-commerce and funnel reporting for large online stores. It integrates tightly with Google Ads and the wider Google marketing stack.

Full comparison: https://satsu.pro/vs/google-analytics

### Satsu vs Plausible

- Entry price — Satsu: €6/mo | Plausible: $9/mo
- Volume at entry — Satsu: 500k events | Plausible: 10k pageviews
- Free tier (not a trial) — Satsu: Yes | Plausible: No
- AI-traffic channel — Satsu: Native | Plausible: Raw referrer
- SEO + accessibility audits — Satsu: Built in | Plausible: No
- Uptime monitoring — Satsu: Built in | Plausible: No
- Cookieless · no banner — Satsu: Yes | Plausible: Yes
- Open-source / self-host — Satsu: No | Plausible: Yes

Why Satsu:
- Far more headroom per euro: Plausible's entry plan covers roughly 10k pageviews; Satsu's €6 plan covers 500k events. Counting differs (events vs pageviews), but the headroom-per-euro gap is large — and it stays large as you grow.
- A free tier that never expires: Plausible is a paid product after a trial. Satsu has a free tier with no card and no clock — start for free and stay free until you outgrow it.
- AI traffic as its own channel: Plausible shows AI assistants as raw referrers. Satsu classifies ChatGPT, Perplexity, Claude and Gemini into a dedicated AI channel so you can actually measure them.
- SEO, accessibility & uptime included: Plausible is analytics-only. Satsu audits your SEO and accessibility and monitors uptime in the same privacy-first product.

Where Plausible is stronger: Plausible is open-source and self-hostable — a real plus if you want to run it yourself. It's a mature, well-established product with a long track record. Its script is famously tiny and its UI is beautifully minimal.

Full comparison: https://satsu.pro/vs/plausible

### Satsu vs Fathom

- Entry price — Satsu: €6/mo | Fathom: $15/mo
- Free tier (not a trial) — Satsu: Yes | Fathom: No (trial only)
- AI-traffic channel — Satsu: Native | Fathom: Raw referrer
- SEO + accessibility audits — Satsu: Built in | Fathom: No
- Uptime monitoring — Satsu: Built in | Fathom: No
- Cookieless · no banner — Satsu: Yes | Fathom: Yes
- Flat pricing at high volume — Satsu: Tiered | Fathom: Flat

Why Satsu:
- Free forever, not a 7-day trial: Fathom is a paid product with a trial. Satsu's free tier has no card and no expiry — a real starting point, not a countdown.
- Lower entry price: Fathom starts around $15/mo; Satsu starts at €6/mo, with room for 500k events.
- AI traffic + site audits: Fathom is analytics-only and shows AI assistants as referrers. Satsu breaks out an AI channel and adds SEO, accessibility and uptime audits.

Where Fathom is stronger: Fathom's flat pricing can work out cheaper at very high pageview volumes. It offers unlimited sites and email reports on every plan. It's a mature product with a strong privacy reputation.

Full comparison: https://satsu.pro/vs/fathom

### Satsu vs Simple Analytics

- AI referral traffic as a channel — Satsu: Yes | Simple Analytics: No
- "AI" feature — Satsu: Traffic channel | Simple Analytics: Chat-with-data assistant
- SEO + accessibility audits — Satsu: Built in | Simple Analytics: No
- Uptime monitoring — Satsu: Built in | Simple Analytics: No
- Free tier (not a trial) — Satsu: Yes | Simple Analytics: Trial
- Cookieless · no banner — Satsu: Yes | Simple Analytics: Yes

Why Satsu:
- Real AI-traffic tracking, not a chat bot: Simple Analytics' 'AI' is an assistant that answers questions about your dashboard. Satsu's AI channel measures the actual visitors ChatGPT, Perplexity, Claude and Gemini send you — a different thing under the same word.
- The full site-health suite: Beyond analytics, Satsu audits SEO and accessibility and monitors uptime — Simple Analytics is analytics-only.
- A free tier that never expires: Start for free with no card and no clock.

Where Simple Analytics is stronger: Simple Analytics has a clean, focused product and a strong privacy stance. Its chat-with-your-data assistant is genuinely handy for quick questions. It's an established, EU-based tool.

Full comparison: https://satsu.pro/vs/simple-analytics

### Satsu vs Matomo

- Cookieless by default — Satsu: Yes | Matomo: No (opt-in)
- Setup — Satsu: One script tag | Matomo: Self-host or cloud + config
- AI-traffic channel — Satsu: Native | Matomo: No
- SEO + accessibility audits — Satsu: Built in | Matomo: Plugins
- Entry price — Satsu: €6/mo | Matomo: €29/mo (cloud)
- Depth (heatmaps, recordings) — Satsu: Focused | Matomo: Very deep
- Open-source / self-host — Satsu: No | Matomo: Yes

Why Satsu:
- Cookieless by default: Matomo uses cookies unless you configure it otherwise. Satsu is cookieless from the first script tag — no banner, no config.
- Simple, not a project: Matomo is powerful but heavy — self-hosting and tuning it is real work. Satsu is one script tag and a clean dashboard.
- AI traffic + site audits included: Satsu breaks out AI-assistant traffic and adds SEO, accessibility and uptime audits without extra plugins.

Where Matomo is stronger: Matomo is open-source and fully self-hostable, giving you total data ownership. It's extremely deep — heatmaps, session recordings, A/B tests, e-commerce. A huge plugin ecosystem extends it in almost any direction.

Full comparison: https://satsu.pro/vs/matomo


## Guides

- [AI-traffic analytics — track ChatGPT & Claude](https://satsu.pro/ai-traffic-analytics): See the traffic ChatGPT, Perplexity, Claude and Gemini send you — per assistant, cookieless, plus the referrer-less clicks other tools lose to “direct.”
- [Cookieless analytics — no cookie banner](https://satsu.pro/cookieless-analytics): Cookieless web analytics with no consent banner: Satsu stores no personal data and uses a throwaway daily fingerprint that can't be reversed to a person.
- [GDPR-compliant analytics — EU-hosted](https://satsu.pro/gdpr-compliant-analytics): GDPR-compliant web analytics with no personal data and no consent banner, hosted in the EU. Satsu is cookieless by design, not by checkbox.

## Docs

- [Getting started: Introduction](https://satsu.pro/docs)
- [Getting started: Install the tracker](https://satsu.pro/docs/install)
- [Getting started: Verify it works](https://satsu.pro/docs/verify)
- [Tracking: Custom events](https://satsu.pro/docs/events)
- [Tracking: Goals & conversions](https://satsu.pro/docs/goals)
- [Tracking: What we track](https://satsu.pro/docs/what-we-track)
- [Privacy: How it's private](https://satsu.pro/docs/privacy)
- [Audits: Performance](https://satsu.pro/docs/audits/performance)
- [Audits: Accessibility](https://satsu.pro/docs/audits/accessibility)
- [Audits: GDPR](https://satsu.pro/docs/audits/gdpr)
- [Audits: Security](https://satsu.pro/docs/audits/security)
- [Audits: SEO](https://satsu.pro/docs/audits/seo)
- [AI suite: How it works](https://satsu.pro/docs/ai-suite)
- [Reference: Glossary](https://satsu.pro/docs/glossary)
- [Reference: Analytics API](https://satsu.pro/docs/api)
- [Full docs as one text file](https://satsu.pro/llms-full.txt)

## API

Read-only public API (Pro and up). Base URL: `https://api.satsu.pro/v1`. Auth: `Authorization: Bearer satsu_live_…` (org-scoped key from Settings → API keys).

- `GET /v1/sites` — list the organization's sites (id, name, domain)
- `GET /v1/sites/{site}/overview` — visitors, pageviews, bounce rate, duration
- `GET /v1/sites/{site}/timeseries` — ?interval=hour|day
- `GET /v1/sites/{site}/breakdown/{dimension}` — pages | referrers | channels | countries | devices | browsers | operating-systems | events
- `GET /v1/sites/{site}/goals/{goal}/conversions` — ?breakdown=

Rate limits per key; every response carries X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, Retry-After (on 429).

Reference: https://satsu.pro/docs/api

## Plans

| Plan | Price | Events/month | Sites | Retention | Team |
|---|---|---|---|---|---|
| Free | €0 | 10k | 2 | 3 months | 1 |
| Pro | €6/mo or €60/yr | 500k | Unlimited | 2 years | 5 |
| Business | €19/mo or €190/yr | 5M | Unlimited | 5 years | Unlimited |

## Not

- Not open source
- Not self-hostable
- No session recordings
- No persistent identifiers

## Contact

- General: hello@satsu.pro
- Security: security@satsu.pro
- Site: https://satsu.pro/
- Canonical: https://satsu.pro/llms.txt