Would you pay for a PC game in general? Because it's essentially a desktop game that's (at the moment) only easily played through the browser due to its language. It doesn't require an internet connection, if that's an issue for you.
As for an iOS port, it'd be nice, but it's simply not possible without me heavily modifying and diluting the game. Touchscreen controls wouldn't feel comfortable (maybe that's just me) and games of its difficulty and type don't port well. I've played other action-heavy 2D games on iOS, e.g. Dodonpachi, and so much needs to be sacrificed just to make it playable.
If anything, I could maybe attempt an iPad port. There's no way it'd be comfortable on the iPhone, though, and I wouldn't feel right completely killing the difficulty just to make it playable.
But for me the problem of browser-based games is just that: they're browser-based, and the browser is just not the environment I like to play in.
I'm not familiar with what's involved in porting this to iOS but if you can, you should definitely consider it.