I've been enjoying PowerApps a lot. I come with a background of custom applications, SharePoint customizations, as well as some InfoPath Forms. The general trend for years has been in responsive design. This means that you design your applications to work with variety of different devices, instead of targeting to a single device type. InfoPath has never has this, it has been awful at different devices. So with PowerApps I assumed that Responsive Design is the natural course, and I was wrong.
Althought PowerApps is build Mobile First (and Cloud First), it is not taking Responsive Design as its design principleas I assumed. I would like to build Apps that work on any device with ease, but with current PowerApps design I'm stick with X, Y, Width, Height attributes of all the controls on the application. As far as I know, there is nothing responsive in PowerApps, and I'm deeply worried how will this affect the usability of the applications.
We are excited to announce that we have started work on introducing responsive capabilities. The first piece will introduce the ability to reference the app display width and height (when it is playing) which would allow advanced makers to write expressions to create relative control sizing to achieve responsiveness. However, that is only a first step. We are evaluating different layout methods and will continue to provide updates as we make progress.
Thanks for all your input. Please continue commenting with any requirements or suggestions. This is an exciting journey that we are beginning!