Screenshots of SweepDodger

If you're at a hotel and you want to sleep in, you can hang a "Do Not Disturb" or "No Moleste" sign on the doorknob so you won't be disturbed. Unfortunately your car's not so lucky, especially in San Francisco. When the street sweeper comes, ready or not your car gets a citation.

So, many citations and $ later, I created SweepDodger, an Android app that combines GPS and the street sweeping schedule (provided by DataSF)  to set a countdown till when your car turns into a free dinner for two city workers:

 

Start: Click the Location button or type in an address. Also select a Curb: L(eft) or R(ight). Which curb? Stand facing the direction where address numbers are increasing, then indicate which curb you are parked on.
Next, press the 'Park Here Now' button. SweepDodger calculates the days, hours and minutes till the next sweeper comes and swipes your money. You can also map your location with the Map button on the right. Notice it calculates 1st and 3rd of the month exceptions, usually a pain to figure out when parking @ 1 in the morn.
Finally when the time elapses, SweepDodger will set off an alarm and warn you that you're about to get pinched. You can set a warning to happen at some preset time before the actual sweep time. Yay!