Great GPS tracker with fun application.
I sadly had to use once the live tracker to find my dog that run scared by a revved bike sound and it made wonders, it took me less than 5 minutes to get it back :).
Standard features like virtual fence, light, sound or history works like you expect them to work.
The leaderboard actually motivates me to get Joy out for run/walks more than before.
The application it is fun, colorful and with lot of social interaction, I could say it is a dog facebook.
Adding dog pal's around you can be a very userful tool if you change your city or even country.