This app reads an apk file from a url and then ask you to approve the
installation (do not think it can be done automatically).
It also checks periodically if there is a new version to download.
You may be wondering what on earth this is good for!
I use it when I develop apps for IOIO (http://www.sparkfun.com/products/10748).
IOIO is a microcontroller connected to the USB port on an Android phone.
You are unable to connect IOIO with Android emulator, so I created this app to
easily upload and test new versions of my IOIO applications on my phone.
In other words, as soon as you put a new version of the apk file (new modification date) on your web server, PhoneDeployApp will triggers an installation of it on your phone.