Just four days remain before Mayor Jerry Sanders and team closes the AT&T San Diego Apps Challenge.

So far, a total of 43 app ideas posted propose everything from wanting a nuts-and-bolts explainer on the enrollment process in “good public schools” to a full list of all the contact information for local elected officials, from email addresses to Twitter handles.

Interestingly, there’s a number of apps that ask for social information on meeting people of similar interests and the latest goings on.