I have been using this for over a year now and find it to be spot on. Having just changed phones I emailed CamerAlert in the evening to change my details and the following morning it had been done. An excellent product with excellent back up.
CBRonda, iPhone
This is about as easy as it gets. Link to your database account and allow auto update. My husband has used these speed camera alerts for a few years on his phone and satnav. So pleased it works on my Motorola Xoom.