django-tracking2

django-tracking2 tracks the length of time visitors and registered users spend on your site. Although this will work for websites, this is more applicable to web _applications_ with registered users. This does not replace (nor intend) to replace client-side analytics which is great for understanding aggregate flow of page views. Maintained by bruth on GitHub, where it has earned 210 stars from the community.

It's actively developed around django, tracking, visitor, and is a solid reference for anyone building with these tools.