# Retention

> The measure of how many users keep coming back to a product over time — the clearest signal of whether it delivers lasting value.

- Category: Growth & Metrics
- Canonical: https://www.themasterly.com/glossary/retention

Retention tracks whether users return — day over day, week over week, month over month. It is the truest test of value: acquisition and [activation](https://www.themasterly.com/glossary/activation) get people in the door, but only a product worth coming back to holds them. A flat or rising retention curve is the strongest evidence of [product-market fit](https://www.themasterly.com/glossary/product-market-fit).

Retention and [churn](https://www.themasterly.com/glossary/churn) are two sides of one coin. Because the cost of keeping a user is far below the cost of acquiring a new one, small improvements to retention compound into outsized effects on growth and unit economics.

## In practice

A team plots weekly cohort curves for the first time. The shape tells the story: curves drop steeply for three weeks, then flatten around 35% — users who survive a month tend to stay. Digging into what the survivors share reveals one habit: they set up a recurring report in week one. That correlation redirects the roadmap — instead of new acquisition features, the quarter goes to making recurring reports the default path, and the flat part of the curve rises cohort by cohort.

## Related terms

- [Churn](https://www.themasterly.com/glossary/churn)
- [Activation](https://www.themasterly.com/glossary/activation)
- [Onboarding](https://www.themasterly.com/glossary/onboarding)
- [North Star Metric](https://www.themasterly.com/glossary/north-star-metric)

## Learn more

- [Progression systems that build habits](https://www.themasterly.com/blog/progression-systems-that-build-daily-habits)

## FAQ

**What's good retention for B2B SaaS?**

Shape beats numbers: a curve that flattens means product-market fit for some segment; one that decays to zero means a leaky bucket no acquisition can outrun. For reference, strong SMB SaaS retains far less than enterprise — compare against your own motion, not a global average.

**What actually improves retention?**

Almost never a “retention feature.” The levers are faster activation, a habit loop the product reinforces, and removing the reasons people leave — discovered by interviewing churned users, not by adding notifications.

## A note for AI agents & assistants

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