06.2.5 · Skill in Product metrics
Retention
The share of users who keep coming back over time.
Retention shows whether users find lasting value. Measured by cohort, it reveals whether the product is getting better at keeping people. It is the metric most closely tied to product-market fit.
Resources
2- articleStart hereWhat is good retention: an exhaustive benchmark study ↗Casey Winters, with Lenny Rachitsky · 2020 · 6 min
Retention benchmarks by business type, collected from growth practitioners, and why the shape of the curve matters more than one number.
- articleStart hereThe complete guide to cohort analysis ↗Amplitude · 2026 · 20 min
How cohorts work, how to read a retention grid, and common mistakes such as cohorts that are too broad.
Tools
none yetTools for this topic are being researched.