It's called "Airdroid", and it's free. Free! :) I'm not sure if it's on the Apple store, but if it is, Apple users should try this too. Here's a screenshot of the app in a browser:
(click to enlarge)
Download the app here.
This works only on WI-FI though, but I'm sure that's a common household system these days. :) I've been using it for a few hours now (since this afternoon), and it's been fun! I'm a big fan of apps that help me access my devices and do my homework faster, so I guess you can expect more recommendations from me in the future. Yay!