So this is how it works when we add a new feature/sensor.
First we add firmware level support, secondly LCD support, after that it'll go into the next update over the local web UI, cloud UI and mobile UI's.
The iOS app is behind in terms of feature support and as of right now, we're working on fixing some bugs with iOS 8, so that's taking priority.
As such, there's a gap between something getting initial support until it's supported in every UI.