This article is a must read for all people who work in UX/UI. I would like to see a followup with a comparison to another map app that isn’t constrained to the 1st Party App Design.
[su_panel]Millions of people have done 3rd party application design. If you expand the pool to people who have sketched out app ideas, the number is probably closer to tens of millions. But how many people have designed 1st party apps? Ones that come on the device rather than being a download? I’d wager the number is less than a thousand.[/su_panel]
If a custom control will make your app 15% better, that’s probably not good enough. You should be holding out for ~50%.