marketing information may be required under local state regulations.
Personalization Used to customize your app, such as showing recommended content or suggestions. In general, the personalization of your app is not subject to any laws, unless such personalization may lead to a situation in which a user is provided with options which may influence their legal or life position in a serious way (“profiling” under GDPR).
Experts have differing views on whether presenting customized ads to a user should be considered “profiling” under GDPR; however, it is certain that, if the customer is denied a service based on an algorithm-made decision, it is considered “profiling” and it requires the explicit consent of the respective customer. Also, in case, for instance, a user is shown specific personalized ads of loans based on information about their poor financial status, it can be viewed as profiling. At all times, the user should be informed whether profiling in the app applies to them.
(Source of categories and descriptions of purposes).
Please make sure that, when your app collects data from users, the users are properly informed about the purposes of processing their data. The majority of data safety regulations around the world forbid (or restrict) using data for a purpose other than the one for which it was collected without obtaining a separate consent from the user.