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

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

Retention is a critical metric; it shows how many customers continue to pay over time, indicating the product's value to them.

Retention should be analyzed by looking at cohorts of users over time, assessing how many continue to use your product after signing up.

Retention is the most reliable way to measure product-market fit; it indicates whether users continue to find value in your product.

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.

It's a mistake to get distracted by new features without ensuring your existing product retains users effectively; focus on improving retention first.

To address retention issues, you can improve your product and directly ask users why they aren't using it, then solve those problems for another chance at success. Additionally, sometimes you need to revisit the product-market hypothesis and consider changing the target audience or the problem you're solving.

Returning usage is a key indicator of product success; track how many users return within various time frames after signing up.