Seline

Quick summary of Seline

Seline is a modern privacy-first product + marketing analytics platform — lightweight JavaScript snippet + events API for pageview + event + funnel + retention + cohort + conversion tracking without cookies + without PII tracking + GDPR-compliant by default in most cases. Distinguished from Google Analytics (free but cookie-heavy, surveillance-grade, complex UI) by privacy-first + clean UX, distinguished from Plausible + Fathom (privacy-first pageview-focused) by deeper event tracking + funnels + retention, distinguished from Mixpanel + Amplitude (enterprise product analytics, complex + expensive) by simpler UX + privacy-first + indie-friendly pricing, distinguished from PostHog (open-source full platform with flags + recording + experiments) by focused product analytics without bloat. For indie hackers + early-stage SaaS + privacy-conscious founders wanting proper analytics without surveillance tracking, Seline is leading modern choice 2026. Core features: lightweight JavaScript snippet (~1KB), event tracking with custom properties, pageview tracking with referrer + UTM, funnel analysis multi-step conversion tracking, retention cohort analysis, user segmentation by properties + behaviors, conversion goal tracking with revenue attribution, real-time event streaming, dashboard with customizable views, custom event properties for rich data, UTM + referrer tracking for marketing campaigns, multiple goal tracking, A/B test integration support, custom domains for first-party analytics, data export to CSV + JSON, REST API for programmatic access, webhooks for event triggers, team collaboration features, granular permissions, GDPR-compliant by default (no cookies, no PII tracking by default), no cookie consent banner needed in most cases, privacy-first architecture, no third-party data sharing, ad-blocker-friendly (less event loss than tracker-heavy alternatives), server-side events API for accuracy, mobile + native app tracking via API, single-page-app routing support, debug mode for testing, event filters + transformations, integrations with Stripe + Shopify + others, dark mode dashboard, mobile-friendly dashboard, fast performant interface. Best for indie hackers + early-stage SaaS wanting proper analytics without Mixpanel/Amplitude complexity, privacy-conscious founders avoiding cookie banner UX + privacy lawyer fees, EU + UK companies needing easy GDPR compliance, teams who outgrew Plausible/Fathom pageview-only depth, anyone tried Mixpanel/Amplitude + found complexity exhausting, marketing teams tracking campaigns + conversions cleanly, product teams measuring feature adoption + retention. Skip for enterprise scale + complex event modeling (Mixpanel + Amplitude more mature), feature-flag + experiment + session-recording needs alongside analytics (PostHog bundles these), pageview-only needs (Plausible cheaper + simpler), strict server-side accuracy needs (PostHog + Mixpanel server SDKs more mature). Pricing: Free tier 10k events/mo + 1 user + all features; Growth $20/mo for 100k events + multi-user + custom domains; Pro $50/mo+ for 500k+ events + team features; Scale custom for 1M+ + dedicated infrastructure + SLA. Direct competitors: Plausible Analytics ($9-$19/mo, pageview-focused privacy-first), Fathom Analytics ($14/mo, similar), Simple Analytics ($19/mo, privacy-first), PostHog (open-source platform, free self-host + paid cloud), Mixpanel ($25+/mo, enterprise product analytics), Amplitude (enterprise, free tier), Heap (auto-capture analytics), Pirsch ($6+/mo, German privacy-first), Umami (open-source self-hosted), Splitbee (newer competitor), Counter (privacy-first pageviews), Google Analytics 4 (free but complex + cookie-heavy). Seline wins on event depth + privacy-first + clean UX + indie pricing sweet spot; Plausible wins on extreme simplicity + brand recognition; PostHog wins on full platform breadth; Mixpanel wins on enterprise + scale + maturity. For modern privacy-first product analytics in 2026, Seline is indie-hacker favorite.