Amplitude
amplitude.comAnalytics
Deep funnel and retention analysis for product teams — powerful, but its pricing and complexity outgrow the solo-founder stage fast.
Other products from Analytics
Free, ubiquitous, and the default most sites still reach for — just don't expect GA4's interface to make sense on the first try.
Open-source and dev-first — bundles product analytics, session replay, and feature flags so you're not gluing together five tools.
Lightweight, cookie-free, and readable at a glance — the GA alternative indie hackers pick when they want numbers, not a data science degree.
Privacy-first and bootstrapped on principle — a paid, no-nonsense pick for anyone who'd rather skip the cookie-banner conversation.