Based on other posts here, new dating apps seem to be entirely banned.

Sadly, in most cases, the best approach is to write entirely separate apps for each platform.

I've read up on Bonjour and on the Network framework and it appears to me (and I may be wrong) that these capabilities only support either devices on the same local network, or devices that are in close proximity to one another. Correct. This is a hard problem in general. As well as the things you’ve mentioned, you need to consider NAT. Have a look at this to get started: https://en.wikipedia.org/wiki/STUN The difficulty of true peer-to-peer communication on the Internet leads many to use a centralised server or some other alternative.

See this thread: https://developer.apple.com/forums/thread/739568

captured using an exception handler and displayed using NSAlert. Don't do that; let the app crash, and then look at the crash logs that Apple will send you. These will include a stack trace so you'll have some chance of identifying the cause. If you really want to trap fatal exceptions yourself, include more diagnostics.

How exactly are you retrieving those values? This does work correctly in general, e.g. I've just checked on my iPhone XS running iOS 17 and got 4.2mm native and 26mm equivalent. Have you tested on any other devices?

It doesn’t look like a “fine line” to me - you’re not allowed to send the data off the device, except under the “bug reporting” exception, and that requires that the user interacts with the process of sending the report, not just silently sending the logs in the background.

Apple handles all VAT and similar. As a developer you never need to be concerned with VAT or sales tax. (There may be exceptions in the case of your own country. Are you brazilian?)

If you want to run Javascript with JIT on iOS, you can use WKWebView.

C code contains stat. Is this the same stat as Apple refers to?? Yes. How do you solve this?? You need to declare your reason for using stat() in thr app’s privacy manifest. It doesn’t matter that it is in a static library.

The important part is Exhibit C 2 A 2.3 : … which I was going to copy and paste, but I seem unable to copy from the PDF. Its says that Apple will pay the Brazilian tax authorities for you.

Is there anywhere I can go to figure out the tax amounts? Apple’s tables show “proceeds”. The difference between what the users pays and proceeds is Apple’s commission and any taxes. I do not believe that they break that diwn anywhere, but you can estimate it quite accurately as the commission is always the same percentage. I just need something to reconcile I strongly recommend not trying to do your accounts at that level - it requires handling multiple currencies and varying exchange rates, which is a huge extra burden. In your accounts, just have a single monthly payment from Apple in your own currency, and just use whatever amount they actually pay. Don’t try to formally link that to your sales numbers in your accounts. P.S. I recommend not posting comments on this forum, they are easy to miss; post replies.

But what does "responsibility" mean? My guess is that in some sense in Brazilian law we developers are "responsible", so if Apple messes up and doesn't pay the right money, if we go on holiday to Brazil then we might get arrested. Because we're "responsible", not Apple. All of that document is legal verbage written to comply with each country's specific requirements, by expensive tax lawyers. You can essentially ignore it. The reality is that Apple collects all applicable taxes in all countries. It would be totally impractical for individual developers to try to interact with the tax authorities in every country where their apps are sold, and the tax authorities know that; they therefore require Apple to collect taxes, which they do.

do you mean I can add PrivacyInfo to the app project? Yes.