The App is currently being updated and it will take some time to re-code into 64 bit as Apple no longer allow 32bit apps on their store. We had not yet updated our website to reflect the removal of the iOS App, but have done so at this time.
At this time the Room Control app is available only for MacOS and Win/PC systems from your my.presonus account where you have registered your speakers.
When the updated version is available, we will make a public announcement.