[hooloovoo_zoo]

I'm trying to figure out what's so great about this app. Is it just that it's available on iOS and OSX?

[stevoski]

It scratches an itch.

It is polished.

It works well.

They marketed it like hell.

[ascagnel_]

It's a few steps above Preview.app (Apple's built-in PDF viewer), but without all the bloat and the high price of Acrobat.

And it probably doesn't have anywhere near as many security vulnerabilities as Acrobat.

[s73v3r]

It's a good PDF utility.