Feature request for the apps. An offline/cached mode that at the least allows read-only information about the devices as of the last time the app was connected. This mode should have a pretty obvious warning banner (like the current no connection) but still retain the last device data. An improvement on that read-only method would be a queued changes method. It would allow someone to make changes with the app while offline (to the best of the app's data). When the app goes online again it would perform the changes requested.