Retention is crucial for consumer products; if users don't return, you face a 'burned forest' problem where new user acquisition becomes impossible.

Tracking customer retention is essential; it helps you understand how many users continue to engage with your product over time, which is a key indicator of success.

Measuring retention is critical; if you don't have a product that retains users, you shouldn't focus on growth yet.

If applicable, know your Net Promoter Score (NPS) and retention rates, as these are crucial metrics for consumer products.

The success of a product isn't just about its initial growth rate; it's also about the repeat purchase rate and customer loyalty.

Retention is the single most important factor for growth; if users don't stay, the business won't succeed.

In the early days, focus on product retention rather than just growth. If your retention rate is low, prioritize improving your product before trying to scale.

Setting a metric and goal for your team allows for data-driven operations, where you can monitor progress daily and adjust strategies accordingly. A low retention rate, like 6.25% after four weeks, indicates poor product-market fit; aim for at least 20-30%.

A net dollar retention above 100% indicates that your customer cohorts are growing over time, while below 100% suggests they are shrinking, necessitating more effort to acquire new customers.