I tried the Sonos app since it looked very similar on both platforms. It's a lot smoother than my experience from a year ago. (Hard to really tell in the limite

I tried the Sonos app since it looked very similar on both platforms. It's a lot smoother than my experience from a year ago. (Hard to really tell in the limited set of screens before hardware pairing.) Edit: If the signup screen in the Grab iOS app is written in Flutter I'm very impressed. I want to believe. Edit 2: Nubank: I only evaluated the sign-in screen(s), but it has enough animations at what seems like a very solid 60 fps on my iPhone X to convince me that Flutter on iOS is actually a real thing now. Very nice. They write about their development effort here: https://building.nubank.com.br/scaling-with-flutter/ https://building.nubank.com.br/scaling-with-flutter/ Edit 3: Maybe I jumped the gun here. Quote from that post: "We’re also facing hard prioritization decisions, especially in flows and screens that work very well in their current state (native Objective-C, Swift, Java, Kotlin, or React Native) for which there are no near-future update plans."