Paying Earwolf $60/year for its content is a bargain, and I'm happy to support all the wonderful people making great podcasts. And it's great that you're all concerned in keeping eps accessible to new folks at a free level, too. Cheers all around.
I don't use an iPhone-- I use gPodder on Ubuntu, and listen to podcasts on an iPod Classic (actually, I just switched over to the Fiio X1 (http://www.fiio.net/en/products/18) -- not nearly as good as the Classic, but it's nice that something is being made these days).
That is to say, I am a non-smartphone user who consumes nearly everything offline. Fairly freakish in this day and age, but it goes to show-- RSS feeds just work. For everybody.
A password-protected RSS feed would be completely platform-agnostic, and just seems the right choice, technology-wise. Forcing Earwolf to develop its own listening app (when there are so many other ways to listen, all of which carefully honed the user experience) seems like a burden on Earwolf, and giving a subpar product to the listeners.
So that's basically it-- I want to give you money, but an iOS app (or even an Android app) is a non-starter for me.