Google Analytics
marketingplatform.google.com
The free web analytics default
FreeFree plan
Event analytics for product teams
Funnels, retention, cohorts and impact analysis over product events, with a free tier that covers a substantial monthly event volume.
Free plan, no card required
Ongoing free tier published by the vendor. Limits vary by plan.
Other tools in analytics & data that cover similar ground. Full comparison.
marketingplatform.google.com
The free web analytics default
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amplitude.com
Digital analytics at enterprise scale