Toptal

But this isn’t just another article about cohort analysis. If you already know the importance of the topic and want to skip the introduction, you can jump to the simulator, where you can either simulate startup growth based on retention, churn, and a number of other factors, or analyze your own PayPal logs with the code I’ve open sourced.

If, however, you don’t realize that these are some of the most important metrics around–continue reading.

Source: Toptal