I can't help but notice that your link to New Secret Santa is under the "old" subdomain.
Their App Store privacy report, as well as the app developer's explicit privacy policy, directly contradicts you. Could you kindly back that up with some evidence, or is this more FUD from you?
My information is coming directly from its app store privacy label.
The developer specifically states that they perform no user-linked tracking with their app. Their monetization model also supports this conclusion.