The app for IOs is horrible!

I have been a big supporter of Sonos and the technology.  That being said, I could not be more disappointed that Sonos has ignored the almost unusable app for IOs!  Given the popularity of iPhones, I would think they would want to make those customers happy.  If they don’t upgrade the controller (when was the last update, no one knows), I will start looking for other solutions.  

How is it possible that basic functions can be ignored.  To name a few: Controller accessible from the lock screen and control volume with the iPhone volume keys.  It wouldn't hurt to update the interface as well.  Maybe if enough of us complain, something might happen.