1) Let's swap Library and Split window icons, because Library icon opens all kinds or resources and they open in full screen or top screen, therefore icon should be in the top toolbar. Split window icon opens split screen in the bottom part of the screen, so it belongs to the bottom toolbar.
2) Current Go To button looks more like Exit button. Doors and arrow pointing to the doors to exit. I suggest to use catalog search icon with the finger on entries. Or you could use half-open book icon, similar to the one currently in the top left corner.
3) In the top left corner replace book icon with the Discard Search icon, which looks more appropriate for what it's supposed to do. Book icon gives idea of opening some book, which it does not do.
4) Split window adjustment handle could use less vertical screen real estate, thus leaving more space to the text itself. Here I colored semitransparent area which could be touch-sensitive zone for split window adjustment (not visible in application UI). And I still think that at least on iPhone it makes sense to show split window handle at the bottom of the screen at all times, because screen is small and often I want to minimize split window to increase text area for reading, and when I find something interesting, I want to open and read commentary again. So the handle at the bottom of the screen would be really appreciated. When you need, just tap on the split window handle and split window slides up to the previous position, or pull it up as high as you need and continue reading commentary. When you don't need it, tap on the handle to push it down, or pull it down manually, and you have the whole screen for the Bible text again. No need to press Split window button and again choose commentary, then readjust split screen proportions. And of course, then we could talk about some gesture to quickly change resources in both split screens… like two-finger gesture left or right to switch to another resource which maybe could be set in application preferences. For example 4-6 Bibles for the top screen and 6-10 resources for the bottom part of the screen (commentaries, user notes, etc.).
Edited by Guntis, 11 August 2011 - 07:26 AM.