The dock has "mobile view", which is like an application that always runs. It is your phones screen. You can click a button to change the orientation between portrait and landscape, and you can also make it full screen. Therefore you can do anything your phone does on the dock, on full screen. You can use every app.
When you blow it up to full screen the resolution stays good as well...it's using the HDMI connection.
The lapdock then has it's own browser, etc... that uses the phones processor and data connection, but those aren't apps on the phone. Make sense?
It is slick to..when you undock the phone it goes you the option to resume that browsing session, with all the tabs, on the mobile device.
The dock does have speakers and a microphone, as well as USB inputs for thumb drives, mice, etc...
It's an insanely useful device.