What Is a Product Engagement Score (PES)? How to Calculate and Improve It
A Product Engagement Score (PES) is a composite metric that measures how actively and meaningfully users are engaging with a product. Rather than relying on any single metric — logins, feature usage, or session length alone — PES combines three key dimensions of engagement into a single score that provides a more complete picture of how users are experiencing the product.
The three components of PES are product adoption (the breadth of features being used), stickiness (the frequency of return usage), and growth (the expansion of usage over time). Together, these dimensions capture whether users are discovering the product’s value, returning to it regularly, and deepening their engagement over time.
How PES Is Calculated
PES = (Product Adoption + Stickiness + Growth) ÷ 3
Each component is measured independently, scored on a consistent scale, and averaged into a single score.
Product Adoption
The proportion of available features or key use cases that users are actively engaging with. High adoption indicates that users are discovering and using the product’s core and extended capabilities, not just a narrow slice.
Measurement approach: Feature adoption rate — the percentage of users who have used each defined feature within a time period, averaged across features.
Stickiness
How frequently users return to the product. High stickiness indicates that the product has become part of users’ regular workflow or routine.
Common measurement: DAU/MAU ratio (Daily Active Users ÷ Monthly Active Users × 100). A high DAU/MAU ratio indicates users are returning daily, not just occasionally.
Growth
The rate at which active usage is expanding — new users activating, existing users deepening usage, or accounts expanding. Growth in the engagement context reflects whether the product is gaining momentum within its user base.
Measurement approach: Month-over-month or quarter-over-quarter growth in active users or session volume.
Why PES Is More Useful Than Single Metrics
Individual engagement metrics each tell a partial story:
- High adoption but low stickiness — Users try features but don’t return regularly. The product may not be delivering sustained value.
- High stickiness but low adoption — Users return frequently but only use a narrow set of features. They’re dependent on one core capability but haven’t discovered the product’s breadth.
- High growth but low adoption and stickiness — New users are activating but not engaging deeply. There may be a gap between acquisition messaging and actual product value delivery.
PES makes all three dimensions visible simultaneously — enabling more precise diagnosis of engagement problems and more targeted interventions.
Using PES to Diagnose and Improve Engagement
When PES is Low Due to Adoption
- Users aren’t discovering key features
- Interventions: Improve feature discoverability, revise onboarding to surface more of the product’s capabilities, add in-app guidance to underused features
When PES is Low Due to Stickiness
- Users don’t return frequently enough to build a habit
- Interventions: Improve the trigger mechanisms that bring users back (notifications, email, scheduled workflows), identify and reduce friction in return visits, create more value in repeat usage through personalization or saved state
When PES is Low Due to Growth
- The user base isn’t expanding or deepening engagement over time
- Interventions: Address activation gaps, improve viral or referral mechanisms, focus on expansion revenue paths that grow usage within existing accounts
PES Benchmarking and Targets
PES targets are product-specific and must be calibrated to the product’s use case. A daily-use productivity tool would target higher stickiness scores than a quarterly reporting tool used once per period. Setting initial benchmarks based on current performance, then tracking directional improvement, is more useful than comparing to external benchmarks from different product categories.
Key Takeaways
A Product Engagement Score gives product teams a single, composite view of how users are actually engaging with the product — across adoption, habit formation, and growth. By making all three dimensions visible simultaneously, it enables more precise diagnosis of engagement problems and more targeted investments in the areas most likely to improve user value and business outcomes. The teams that track PES consistently over time, break it down by segment, and use it to guide product improvements build products with stronger user engagement — and the retention and growth that follows.