In my long experience - two weeks :) - of using Trello, I have been using the Safari browser on macOS and also (mainly) on iOS.
Are there any compelling reasons to consider using Chrome on either macOS or iOS? I don't use Chrome otherwise; the app is not installed on any of my devices.
Also, what's the point of the iOS app? There doesn't appear to be anything that can't be done in Safari, and there are things that can't be done in the app.
What's your view?