CURB - Free SF parking map that shows when tickets actually land

CURB is a free map of San Francisco street parking rules. Every swept curb is colored by its next street sweep. A typical sign gives a two hour window, but about 77% of tickets are written in the first 45 minutes. On most blocks CURB shows when tickets usually land, based on about 815,000 past citations. Push alerts and calendar reminders before a sweep. Web plus a free iPhone app. No account, no ads, no cookies. Open source. San Francisco only. The posted sign always wins.