Seline

Overview

Seline is a modern, privacy-first alternative to Google Analytics designed to bridge the gap between simple website stats and actionable product insights. Founded in 2024 by developers who wanted a tool that was “coded with love rather than vibes,” Seline focuses on minimalism and performance. It runs on a whisper-thin ~2kb script—approximately 23x lighter than Google Analytics—ensuring that data tracking does not compromise website loading speed.

While many tools force users to choose between high-level aggregate traffic data and complex event-based product analytics, Seline offers a hybrid approach. It provides the clean, cookie-less dashboards expected of modern web analytics while offering granular features like user profiles, custom events, and conversion funnels typically found in heavier product analytics platforms. This makes it particularly attractive for SaaS founders, indie hackers, and e-commerce businesses who need clarity without the steep learning curve of enterprise tools.

Seline differentiates itself with a “human-coded” philosophy, rejecting the bloated, cookie-heavy tracking of legacy platforms. It utilizes a ClickHouse database for blazing-fast query speeds and offers a unique AI interface that allows users to chat with their data. Fully GDPR-compliant and hosted in the EU (Germany), Seline enables businesses to track actionable metrics while respecting visitor privacy.

Key Features

User-Centric Journeys and Profiles

Unlike basic web analytics that only show aggregate numbers, Seline allows you to zoom in on individual visitors. The platform enables the creation of User Profiles, which can identify specific users (once they log in or identify themselves) and track their specific lifecycle. This feature moves Seline into the realm of product analytics, allowing teams to pass custom attributes and monitor user health.

By visualizing the full visitor journey, product owners can see the exact path a user took—from their first landing page view to specific custom events like “clicked signup” or “added to cart.” This granularity helps teams understand the why behind the metrics, revealing friction points in the onboarding flow or confirming which content pieces lead to high-engagement sessions.

Seline AI Assistant

Seline integrates a specialized AI agent directly into the dashboard to democratize data access. Rather than manually configuring filters or learning a query language, users can interact with their analytics using natural language. The AI can aggregate page views, generate ad-hoc funnels, answer specific questions about traffic sources, and even spit out CSV files for external use.

This feature transforms the analytics experience from a passive dashboard review into an active conversation. For non-technical team members, this removes the barrier to entry for data analysis. A marketing manager can ask complex attribution questions, or a founder can request a quick summary of churn indicators, receiving immediate answers 24/7 without needing to consult a data analyst.

Revenue Tracking and Attribution

For e-commerce and SaaS businesses, traffic means nothing without revenue context. Seline includes dedicated revenue tracking capabilities that integrate directly with platforms like Stripe. This feature connects monetary value to traffic sources, referrers, and UTM parameters, giving a clear picture of Return on Ad Spend (ROAS).

This system allows business owners to see not just which channels bring the most visitors, but which channels bring the most valuable customers. By filtering data by revenue events, teams can optimize their marketing budgets toward high-converting sources. The setup supports custom event tracking for purchases, enabling precise analysis of how different user behaviors correlate with financial outcomes.

Pricing

Seline offers a straightforward pricing model designed to grow with your business. The Free tier is generous for early-stage projects, allowing up to 3,000 events per month with no credit card required. This tier includes access to all core features, 1 year of data retention, and 1 user seat, making it fully functional for validation and small sites.

For growing businesses, the Pro plan starts at $14 per month for 25,000 events. Pricing scales based on the number of monthly events. The Pro plan unlocks forever data retention, 30 team seats, 100 AI chat messages per month, and ad-blocker bypass capabilities to ensure higher data accuracy.

Seline uses a “per project” subscription model, but offers a unique flexibility: you can link multiple projects under a single Pro subscription to share the event limit. This is ideal for agencies managing multiple client sites or founders with several small projects. Additionally, Seline provides a soft limit buffer—if you exceed your event limit for the first time, they notify you rather than cutting off data collection, allowing time to upgrade or adjust.