I haven't found it very useful. Certainly not a reason to choose iPhone over Android. I have other reasons (like privacy concerns and ecosystem lock in).
Honest question - Why would you say Android is worse at ecosystem lock-in than iOS?
I am not saying it is worse I am saying I am locked into Apple's ecosystem. :)
Not the parent, but Android allows easy installation of arbitrary APKs downloaded from anywhere. Also, there are multiple app stores on Android, like Amazon.
voluntary Ecosystem lock-in is actually the reason I moved back to iOS. I use an iPad pro, and I don't believe there's a better tablet out there. I use Macbook Pros both at work and at home. Having all of those devices perfectly in sync is amazing for my productivity.
I tried too, but I can't find a use for tablets. As long as there is my laptop around, I never reach for the tablet.