There is no difference regarding GDPR/newsletter/discount popups between website and application. It's up to the owner if they want to nag users, and on which platforms.
(as for the GDPR, consent must explicitly be given in app as on the website, if they are doing tracking and sharing the data with 3rd parties)
I disagree. Native apps usually don't have annoying popups especially to the extent that the web does. Saying there's "no" difference isn't being genuine.
(as for the GDPR, consent must explicitly be given in app as on the website, if they are doing tracking and sharing the data with 3rd parties)