Why do you think Flutter is not perfect pixel on IOS? Here’s the announcement from September of Last year. https://developers.googleblog.com/2018/09/flutter-release-preview-2-pixel-perfect.html

Also, flutter compiles to native for android and ios. http://flutter.io. and here is some links to FAQ. https://developers.googleblog.com/2018/09/flutter-release-preview-2-pixel-perfect.html

I was a pure ios developer, have switched to flutter/dart and love it. Not looking back at all. It’s young but growing fast.

With all due respect, I think your info is outdated, but valid points as to why not to use it if they were still true.