It is a bit different. My app doesn't rely on 3rd party services at all. It just provides functionality. It is not about breaking into someones account.

I just know that the app can just be cracked - there are plenty of sites that do that for android. Because you can't just load your app on iOS - this is just not possible (well perhaps there are a few percent of some jailbroken iPhones, but that is neglibile).

On Android though, you can soon see such app stolen and on some of the apk warez sites. It just breaks the model.

Have you tried extracting, decompiling, and modifying someone else's app?

It wasn't hard before LLMs and it's nearly trivial now.