Sleep Train collects limited analytics and attribution data to improve the app, measure advertising effectiveness, and understand how users interact with the app. The types of data collected may include device identifiers, purchase information, and product interaction data. This information is generally not used to directly identify individual users. Sleep Train may use third-party service providers, including analytics and advertising attribution partners, to help measure app performance, advertising effectiveness, and user engagement. Sleep Train does not require user accounts, and app settings are stored locally on the user's device. Local app data is removed when the app is deleted from the device.