I recently got wind of Trapster and recently started trying it out. At the moment there are some bugs with non-US maps and speed traps might not show in the correctly location. However this should be fixed with a pending update that was submitted to Apple.
Here’s a blurb about Trapster from their site.
When you see a trap, report it by pressing a button on your phone, or calling a toll free number. Other user’s phones will alert them as they approach the trap. Trapster® learns the credibility of traps based on how many users agree. It also learns the credibility of each user, over time.
Click Here to watch a demo video of Trapster®
So how does it work? Our goal is to make it so simple that you don’t need to know. But in case you are interested, it combines technologies such as GPS and wireless location, voice transcription, geocoding, reverse geocoding, and SMS, with a central database server. It communicates in real time, using the Internet.
You will need to sign-up first on the Trapster site before you can start using trapster. They will ask for an email address and a login, you will be sent a confirmation email afterwards and once you activate your account you can input it into Trapster on your iPhone. Once everything has been setup, you’re ready to go. Here are some screenshots.
