Developed by Google, the HEART Framework is a UX metrics model that helps teams track what really matters in user experience.

It breaks down experience into five key dimensions:
Happiness – user satisfaction and attitudes
Engagement – level of user interaction
Adoption – new users of a feature or product
Retention – return users over time
Task Success – efficiency, effectiveness, and error rates

By aligning product goals with these UX metrics, teams can make more informed, user-centered decisions—and build better experiences that scale.

Design with HEART.

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HEART Framework Meaning & Definition of Terms | UX Glossary

The HEART Framework is a UX metrics model by Google that evaluates user experience across Happiness, Engagement, Adoption, Retention, and Task Success. Learn how to apply it for data-driven design decisions and product improvement.