I also want to add tracking for profiles. When that's ready I might include a link to your app there. Would be cool if you could open a specific profile directly with a link like https://gitmentor.app/toniengelhardt.
IMO the benefit of UUIDs over integers is that they can be generated client-side without clashing. But you cannot trust timestamps generated by clients and therefore the order. So what is the benefit over UUID4?
What's the reason that you don't update your phone to iOS 26?