The PocketShrink apps are self-diagnosis tools.
PocketShrink Depression allows a user who has concerns around being depressed, low, flat, resigned to gain some self understanding and a rough gauge on whether they should seek further medical advice.
It also allows them to see the results of other anonymous users of the app who have the same concerns as themselves.
The app can also enable a user to get a rough diagnosis of others they are concerned about, by answering the questions for them (instead of yourself).
The app is simple and easy to use. It was written by a practicing psychologist and is based upon the latest diagnostic and statistical manuals (DSM IV).