HEART

HEART is a user-centered metrics framework developed by Google.

Components

• Happiness: User satisfaction and attitude
• Engagement: Level of user involvement
• Adoption: New user acquisition
• Retention: Existing user retention
• Task Success: User efficiency and effectiveness

Usage

Used for measuring and improving user experience metrics. Provides a comprehensive framework for tracking product success from the user's perspective.

Examples and Applications

• Feature Success: Measure impact across all five dimensions
• UX Improvement: Track satisfaction and task success rates
• Product Strategy: Balance growth (adoption) with quality (happiness)
• See also: GAME, AARM, CIRCLES