iOS Signal Flare from Lookout is a free app that has proven popular on Android and Blackberry and has now made it to the iPhone.
The app has many of the features of Find My iPhone, but it has additional features that you might find compelling.
There are a couple of nice features. If your phone is running out of battery, it will take note of its location. You can sign in from any browser and see the phone's last-known location. If the phone is lost, you can also send a loud alarm (and it is loud) to locate your phone if you think it is nearby -- even without a SIM card. The alarm starts at a low level, and then conti
