Greetings,
I've been enjoying the iFly 740b compared to my old iPad Mini 4. In the RV, the iPad wasn't bright enough, and the buttons for all the other apps were small to hit in turbulence, particularly wrt the screen sensitivity. The 740b is much better for brightness, and the app (even on other devices) is more usable because it typically has larger buttons. More importantly, many of the buttons are located at the edge of the screen, so in turbulence I can put my finger on the bezel, then roll it to tap the button. That pretty much insures a successful tap.
The problem I have is when tapping on buttons that are on a scrolling list, such as the direct to button on the NRST list. The same problem exists when trying to tap on spots on the map. When there's turbulence (pretty much always here), if there's any relative motion between your finger and the screen, the attempted tap ends up scrolling the screen, and not hitting the button, or spot you were trying to tap on the map.
One possible solution I can think of would be a delay option for all scrolling. This would require you to hold your finger on the screen for some configurable period of time before it would scroll. People who don't like it can set the time to 0, and others can set it to maybe a couple tenths of a second. With the delay active, any touch less than the delay period would be accepted as a tap, not a scroll. I think that would make it a lot easier to select a scrolling button or spot on the screen in turbulence.
Cheers,
Rusty