Web Analytics · Vendor profile

Seline

Simple, cookieless, privacy-first website and product analytics built in the EU.

Founded 2024· Warsaw, Poland· ~4 employees· seline.com ↗

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Last verified 2 days ago · 17 sources · Updated automatically

Founded

2024

Headquarters

Warsaw, Poland

Employees

From

$14

Free tier

Script size

4.2 KB

Overview

Seline is a cookieless, privacy-first web and product analytics tool built and hosted in the EU. It tracks visitors without cookies, using daily-rotated non-reversible hashing instead of persistent browser storage, and claims GDPR compliance with no consent banner required. All infrastructure runs in Germany via Hetzner, and the vendor states no personal data is retained.

It is sold as a single Pro plan at $14/month, with a 7-day free trial and no perpetual free tier. The plan meters 100,000 events per month (pageviews and custom events combined) for one project, retains data indefinitely, and ships a 4.2 KB tracking script. Seline is a small bootstrapped team of about four, founded in 2024 and headquartered in Warsaw, Poland.

Beyond basic counts, Seline offers real-time dashboards, custom event tracking, multi-step funnels, goal and conversion tracking, and revenue attribution with native Stripe, Shopify, and Polar integrations. A public Stats API, raw event export, an official WordPress plugin, and public dashboard sharing are all included.

Best for

Teams that want analytics without cookies or a consent banner, with EU data residency and a claimed GDPR-compliant posture.
Product and ecommerce teams needing funnels, conversion goals, and revenue attribution with native Stripe, Shopify, and Polar integrations.
Performance-conscious sites wanting a small 4.2 KB script and a single flat $14/month plan covering 100k events with unlimited data retention.
Developers who want a public Stats API, raw event export, and an official WordPress plugin for integration.

Less ideal for

Anyone wanting to try the product long-term for free; there is no free tier, only a 7-day trial before the $14/month plan.
Teams requiring self-hosting or an open-source SaaS; the platform is proprietary and cloud-only, with only the JS tracker client MIT-licensed.
Sites migrating from Google Analytics that need historical data; there is no GA import, so tracking starts from install.
Agencies or multi-site owners; pricing is per project, so each additional website needs its own Pro subscription.
Buyers wanting a vendor with deep resources or long track record; Seline is a roughly four-person bootstrapped team founded in 2024.

Pricing

Starting Monthly Price (USD)

$14 · Single 'Pro' plan at $14/month (monthly billing). Annual billing available with 2 months free.

Offers Free Tier

No perpetual free plan. Seline states: 'No, we don't have a free plan. We're a small bootstrapped team operating exclusively through subscriber fees.'

Free Trial Length (Days)

7 days · 7-day free trial on the Pro plan, no credit card required.

Entry Plan Pageview Limit (Monthly)

100k · Pro plan includes 100,000 events per month. Seline meters 'events' (pageviews + custom events combined), not pageviews alone.

Entry Plan Website Limit

1 sites · Pricing is per project (one website/domain per subscription); linking additional projects requires their own Pro subscription, with the option to share an event limit.

Analytics capabilities

Real-Time Dashboard

Live globe view and real-time visitor activity dashboard included.

Custom Event Tracking

Custom events tracked via seline.track() JS method or data-sln-event HTML attributes. Custom properties supported.

Goal / Conversion Tracking

Conversion via multi-step funnels (step drop-off / conversion rate) and revenue-attributed custom events.

Funnels

Multi-step funnel analysis built into the product for all plan users.

Ecommerce / Revenue Tracking

Revenue attribution by traffic source, referrer, and UTM. Native integrations with Stripe, Shopify, and Polar. MRR tracking included.

Heatmaps

Not tracked yet

Privacy & compliance

Cookieless Tracking

Cookie-free by design. Uses daily-rotated non-reversible hashing of IP+browser+device — no cookies or persistent browser storage.

Consent Banner Required

No cookie/consent banner needed. Seline explicitly states GDPR compliance without requiring visitor consent banners.

GDPR Compliant

Vendor explicitly claims GDPR compliance. No personal data retained; EU-hosted infrastructure.

EU Data Residency

All infrastructure hosted in Germany (EU) via Hetzner — app servers, ClickHouse, and Postgres databases.

Data ownership & deployment

Open Source

The main SaaS product is proprietary. Only the JavaScript tracker client (seline-js) is MIT-licensed open source on GitHub.

License

proprietary · Main analytics platform is proprietary SaaS. The JS tracker client is separately MIT-licensed.

Self-Hostable

Cloud-only SaaS. No self-hosting or on-premises option is documented or advertised.

Data Retention (Months)

Not tracked yet

Unlimited Data Retention

Pro plan retains data forever ('unlimited' retention). Free trial and any hypothetical lower tiers cap at 1 year.

Google Analytics Import

No official Google Analytics (UA/GA4) historical-data import; tracking starts from install.

Raw Data Export

Public API includes a Raw Events endpoint for exporting individual event records with full filtering, pagination, and ordering. CSV export also available via AI assistant.

Platform & integrations

Has API

Public Stats API available at seline.com/api — covers visit metrics, custom events, funnels, visitor profiles, revenue data, and raw events.

Tracking Script Size (KB)

4.2 KB · Measured compressed transfer size.

Official WordPress Plugin

Official WordPress plugin published at wordpress.org/plugins/seline-analytics by the Seline founder (nstkostya = Kostya Nesterovich).

Email Reports

Not tracked yet

Public Dashboard Sharing

Dashboards can be shared via a public link (e.g. app.seline.com/share/<site>) viewable without an account.

Alternatives to Seline

Clicky

Real-time, privacy-friendly web analytics with per-visitor tracking and heatmaps.

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Cloudflare Web Analytics

Free, privacy-first web analytics that tracks page views without cookies or fingerprinting.

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Fathom Analytics

Privacy-first, cookieless web analytics with a simple dashboard and forever data retention.

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Sources · 17 verified references

seline.com starterstory.com capterra.com github.com cdn.seline.com + 3 more

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