The percentage of devices on which users installed your app during the reporting period that, according to the forecast, will be inactive after the specified period of time (7d, 14d, 21d, 28d) based on the inactivity window settings ?.
For example, Churn Prediction LT 14d is a predicted share of devices that will be inactive after 14 days from the installation day for the next 30 days (default inactivity window).