How to read a flat retention curve?

A flat retention curve means that the percentage of users remaining active over time remains almost unchanged — retention is stable at a certain level.

How to interpret such a curve:

• If the curve is flat and at a high level (for example, 30-40% or higher), it is a good sign — users are consistently returning, and the product retains its audience.

• If the curve is flat but at a low level (for example, 5-10%), it indicates that the product retains a small but steady portion of users. It might be worth improving engagement or adding new features.

• The absence of a decline in retention may mean that users who remain after the initial period are loyal and continue to use the product.

• For a product manager, it is important to understand why retention is stable: is it the result of a quality product, or do users simply not leave due to lack of alternatives?

Example: if day 1 retention is 40%, and the flat curve stays at 40% up to day 30, it means 40% of users continue to use the product for a month.

Overall, a flat retention curve is a reason to analyze retention quality and consider growth and engagement strategies.