I experienced an absence of heat, light and WiFi during the last 2 days of the Super Storm on the Eastern Seaboard.
During that period I gave Logos Android Bible a good test without any access to WiFi using the KFHD7-32. I had loaded all the resources I needed prior to the storm including maps, bibles, dictionaries, commentaries, etc.
I could do full searches for Bible verses or phrases,, use the Book Icon menu easily and go back and forth between resourses without any problems.
I had noticed that the Kindle Fire 1st Gen could NOT do most of that in Church when WiFi was denied to me.
Thus, the Logos Bible and the Kindle Fire HD 7" 32 Gb are a perfect meld and WiFi is unnecessary to enable its maximum performance.
The only problem I've encountered is using the "Morning and Evening" Devotions with the KFHD7-32. It does not appear on the proper pane. On the KF1G it always appeared there. On Logos PC I have it as one of my favorites.