Interest in (development of) iOS side is kinda low (request is not bad, but millions of requester doesn't make any single dedicated contributor)...
I'm wondering if you have that backwards. There were a number of fairly ambitious projects for doing iOS development with FPC. There's Dmitry's above-mentioned iPhone_Laz_Extension, which is still actively developed. And there are at least a couple of abandoned efforts, starting with iOS Designer:
http://wiki.lazarus.freepascal.org/iOS_DesignerAnd I would be remiss if I didn't mentioned my own abandoned article series from 5 years ago (although it seems much longer) that showed how to integrate FPC with Xcode for both OS X and iOS development:
https://dl.dropboxusercontent.com/u/28343282/ObjP/ObjP_Intro.htmlI think the problem with all of these projects, other than not being complete enough or seamless enough for some, is that very few people ever used them. Developers of add-ons like this feed on the energy of demand for more and more of what they're doing. I don't think that demand was ever there.
There was a window of opportunity for iOS development with FPC about 5 years ago, right around the time that Delphi XE2 came out with support for iOS. But that window is now firmly closed. Most developers for iOS have moved on and embraced Xcode or Xamarin Studio. They're no longer here.
The question in my mind is whether anyone will ever again invest the kind of effort it would take to develop a complete FPC solution for iOS. My guess is no. Certainly a unified GUI for Lazarus mobile development will never happen.
-Phil