Insight Advisor can analyze an app to see how fields are used to create charts. The QlikPrecedents Service analyzes apps whenever Insights is opened in the app. The service examines the use of data fields and master items in charts. This teaches precedents for making aggregations, dimensions, and measures for the data model of the app. In unpublished apps, Insights can use precedents learned from published apps and from user feedback in the app.
App analysis does not examine the data in fields, only the data tables and field names and how they are used. App analysis is enabled for all published apps with Insight Advisor. You can disable Insight Advisor in a published app if you do not want Insight Advisor to learn precedents from that app.
For information on disabling Insights, see Creating visualizations from your data using insights.