I'm a diehard Nexus / Pixel user, but I have had a few iPhone's over the years, not many, maybe 2 or 3 the past 15 years. My last iPhone was the 12 Pro Max, and that was few years ago, and I will say the apps were indded just a bit better, more Settings options that just aren't in the same app on Android, they moved a bit more fluid smooth.
And I hate iOS think it's a dog poo OS, but I will say apps wise they just seemed more polished, more options, and ran better on the iPhone 12 Pro Max than they did on my Pixel 4 XL at the time.
Specifically the extra settings options I really liked, that for some reason were just absent and not in the Android version of the exact same app. You could individually change the font size or theme or certain things in the iOS app, but in the Android app those options just did not exist.
But that was 3 years ago, things have probably changed since then? I have zero intention on getting a new iPhone anytime soon, just do not like iOS at all. But I will say hardware wise the iPhone 15 Pro does look extremely impressive, it will be the top dog smartphone king of 2023, as far as best hardware.
But I'm a weirdo, every time I go to BestBuy I will stop by the Apple section and play with the latest Pro Max phone, and always have been super impressed with the fluid smooth operation of them, and I do love the FLAT display, and the rounded corners / shape of the phone. But then I think deeper, and realize how frustrated I get with iOS compared to stock Android, and then put the phone down and walk away. ( day dreaming we could flash a stock vanilla Android ROM on an iPhone LOL )