Cross-platform local file transfer alternative with resumable file transfer:
edit: Okay, on a closer look, it seems like you do need two licenses, because the iOS license can only be purchased through the iOS app. Just wish they'd provide a brief trial so I could test it.
edit2: Nevermind, apparently, if you install the apps, you can use them in a limited fashion before buying. It doesn't say anywhere what the limits are, but it says there are limits.
I grew to dislike the app after running into the limits/ads. It does work, but it feels cheap and unpolished. There's no way I'd ever buy one of the pricing plans. I just don't feel like I would be getting my money's worth, especially when I could just go through a more involved solution.