iTunes gives an information (capacity bar) of the device (iPod Touch) when connected, with respect to the amount of space used by each category like Audio, Video, Photos, Apps etc. Is there any possibility to get the same information on the device itslef. This could be either through any functionality in the device or through a app.
Edit: I am looking for Disk usage (specifically for applications), and not the item count that is shown under Settings->General->About