I don't know if there are any free apps, but if you're on Verizon and want to pay a monthly fee and you have the S2 3G activated with it's own number then you could use their Family Locator service, looks like its $9.99/mo
Hi, I was wondering the same thing myself. I know that the app Endomondo will allow live tracking but I'm not sure if it will work on the S2. If you download the app then change the apps location settings to use the watch GPS not the phone gps then download and start a workout on the Endomondo app using your watch to start you should be able to track the workout ( ie everywhere you go) with anyone whom you choose to share the workout with. It would be great if you get this to work if you could please post your results. Thanks Tony