What is a DAU?
GLOSSARY The abbreviation DAU has two meanings. Among other things, it refers to users who are not blessed with much brainpower.

Uninstalling cookies is not equally simple for everyone. Especially not for DAUs.DAU is the abbreviation for the term Daily Active User. This is a measurement of the daily active users of apps, platforms, etc. In addition, DAU is also the German abbreviation for the term "Dümmster anzunehmender User. The term refers to computer users without basic knowledge and expertise in the subject matter. The term also plays a role in relation to the user-friendly operation of hardware and software (usability). The term originated in reference to the word GAU (greatest accident to be assumed) and was then adopted in the area of project management in information technology, among other things. If, for example, a program is said to be DAU-compatible, this means that the program can be used without the background knowledge of future users and can be used intuitively by them (keywords: usability test and user-friendliness) and that possible operating errors have also been taken into account.Source: glossar.xeit.ch
