haha, well lets say I am a fan of iOs development... then I would give a priority to it.
But now all depends of the project, I am really open to offer as I do not always accept a iOS project if I do not feel good with.
For PC user I already developed a viewer for it 2 years ago :
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http://samavan.deviantart.com/gallery/23777365#/d1yk1keBut there was not update for this viewer.