I've picked up what I think is a repeatable problem which has appeared since the latest upgrade. I'm using an iPad3 with iOS7 and I think it is Skydemon 3 (the latest one the app store offered me).
If I don't use Skydemon for a few days, when I come back to use it, I get a series of error error message indicating failures to access weather etc. The system tells me that Skydemon has lost contact with the server (I think) and I need to log out and log back in again. It's not done this before. When I log out, I am immediately presented with the login screen, the 'agree' button never activates. It stays grey indefinitely. I have to manually kill Skydemon before it will work again.
Not sure whether this is something specific to my system or whether it is a bug. It certainly hasn't behaved like this in previous versions on the same iPad. Are there specific settings that need to be turned on to keep Skydemon linked up to Dorset high command? I have my iPad set up to avoid burning excess battery and location services for other apps (not SD) are generally switched off.