> I wonder what changed that would permit the use of an iPad this time?
The DE1+ app is written using a cross-platform language called Tcl, which is why the app is currently available on Android, Windows, OSX and Linux.
In particular I've used Androwish http://www.androwish.org/index.html/home
and the developer behind it has ported it to many other operating systems: http://www.androwish.org/index.html/wik ... ndroidwish
Androwish is planning on support iOS ("can be extended to run on another fruity smartphone platform").
However, the cross platform nature of Androwish relies on many other projects being up to date on the OSes it supports (such as the SDL https://wiki.libsdl.org/APIByCategory
). So... Androwish can be ported to iOS once those other projects complete their iOS ports.
And once that happens, there will be a version of the DE1+ app on iOS. I don't have any visibility on when that will happen, but I expect it will, since it's happened already on so many other OSes.
As to the 2nd question:
> And would it bring any improvements?
No benefits at all, other than using a iPad (which you might prefer). I'm committed to all OSes having exactly the same feature set, for many reasons.
One note about tablet sizes: the Android tablets I've selected for the DE1 are wider than iPads, so that the overall height of the the espresso machine + tablet can still fit under kitchen counters. iPads tend to be larger, often much wider than the current Decent Tablet, and so I'm not sure they'll look all that great mounted on top of the DE1. But if you prefer it, it'll be your choice.