Yea I've been playing this game for a while, about to hit lvl9 if I can get a couple more silver badges by then, but I'm starting to get burnt out on it. It's good for getting out of the house on a slow weekend day when I might otherwise sit around and play video games or something. It's a nice concept and the first augmented reality game I've played. You kind of need to be somewhere populated for it to be much fun. I told someone about it, but then looked at the map around them and there's nothing except the churches, no art really. Here there's art all over so it's gotten me to notice things I otherwise wouldn't have.
For those with limited data, it doesn't use much. I just switched to Ting from my companies plan, so not sure how much exactly yet, but might still be worth a try.