I've used mobiles all the way back to the mid-80s (yes, they were there). But I finally decided to get an iPod Touch which I upgraded to iOS7 last week.
Then I loaded Logos, Laridian PocketBible, OliveTree BibleReader, and the Accordance product (I own decent libraries in the first 3).
This isn't a 'review'; my goal is primarily just to read. And it's not recommendations.
But I'll have to say, comparing the 4, that Logos is nicely done. Some really subtle programming touches. Power to match my library. I've been a bit (ok, more than a bit) of a whiner on Logos4/5 but the iPhone/iPod version, I'm very much impressed.
I thought Laridian would be my favorite, since I've loved it since version 4 (old MS mobile). But it had kind of clunky-ish handling of 'extras'. However in church, it will remain my favorite, since the interface is easy and quick ... keeping up with the pastor, no problem.
OliveTree ... I think most people like it? For quick church use, I like Laridian better. And for reading, and heavy libraries, Logos is better. So? I use it for NETS and USB-Handbooks.
However in the 'visuals' department, Accordance REALLY shined. Goodness, I'm in love. Maps, images. I'm waiting for the Windows version of Accordance mainly just for maps/timelines (Carta, the Bridge, etc). Now if Logos built the image viewer Accordance has (and adds Carta, of course), ah .... Logos hands down.
So thank you to the developers. I view the primary platform as 'bought' (eg Logos4/5) and so 'whine-able'. But the mobile platform is a gift from Logos. A very nice gift.
The tip: you probably know the double-click on the iPhone/iPod home button brings up all the apps that are open in memory. The problem is there's millions of them (on mine anyway). Apps I don't even still have installed! But flipping unneeded ones upward closes them. So .... I have my Logos open, Laridian for quick lookup, and Acccordance .... all nicely organized with the double-click button! Bible study ready.
Another Logos winner. (I might add, I've already crashed the iPod several times, also inducing a scrambled lower-right screen. Ah yes, Apple.)