Independent Analytics runs entirely on your website, which means the data it creates is stored in the WordPress database.
The data stored by Independent Analytics is in tables prefixed with “_independent_analytics,” as pictured below.
Separately, there are a few options saved in the wp_options table, which all begin with “iawp.” These only take a few kb of space and store data about the settings configuration, like whether to track logged-in visitors or use the dark mode theme.
As for the volume of data stored, Independent Analytics stores about 200-300MB per million sessions. This value does change from one site to the next, but we find this estimate to be accurate for most websites.
If you’d like to limit the amount of data stored in the database, you can enable the option to automatically delete old data.