Nice, powerfull app to enable your website to be taken offline. Try the demo here (visit it with a mobile device).
For
You'll find a great intro-video after the screenshots-gallery.
The Video how to use this - recorded at the DNN Connect 2015
v. 01.04.00 GUID: 75f60721-c8ca-4b02-8c26-26e35fdff539
If this is the first time you've seen DNN-Apps and would like to try one - just install 2sxc first, then install this app inside it.