First off, my kids are not old enough to drive and I don't drive like a manic, so I really just don't see any value in it.  In a week or two of using it, it has told me absolutelly nothing, other than I spend a lot of time idling (waiting in line to pick up kids after school), which I already knew.  This morning I had a really hard time starting my car in cold weather(32 degs - cold for houston, lol), but zubie didn't give me any kind of battery alerts and I know my battery is old and needs to be replaced. It makes me wonder just how far does your battery have to go before it will alert you to a problem. My check engine light isn't on, so I haven't received any info on that end either other than that everything is okay.  As far as engine and battery status goes, I think a bluetooth odbII reader would be better suited and would provide more information.Activation was easy enough, as long as you take note of what other reviewers have said about removing the space that appears at the end of the activation key when you scan it - I had already read about this problem before I started so right after I scanned it, I removed the trailing space at the end of the key before I proceeded and everything went without a hitch.  Still kinda dumb that the problem still persists even after being reported and I'm sure it will cause a lot of people problems when trying to activate.And then there are the privacy concerns - I know a lot of people are worried about what they will actually do with the information they gather, and I think it's a valid concern but I'm not sure really just how big of a deal it is.  Even so, when I signed up I gave them minimal information just in case. I'm not going to dwell on the privacy issue for this review because other reviewers have already gone into great detail and done thorough research on it.But even if you can get past the privacy concerns, I'm just not sure an adult would get any real world use for their $99/year.  It could be useful to find your car if it was stolen, since it does have the capability to show it's location on a map, but I'm sure thieves will quickly learn to unplug it before taking off in your car.As far as reporting driving habits - I think most people are well aware of how they drive and don't really need a $100/yr device to tell them if they brake hard or accelerate too fast.  The only way I could possibly see using it, is to put it in a teens car so that you can monitor their driving, and even then I would only do it for maybe the first year, if at all.As for the app, it's somewhat limited in features and very buggy.  It crashes multiple times, freezes and overall just acts weird.  The only cool feature it has is to pinpoint my car on a map, but even then all it does is tell me my car is outside in my driveway, lol.  Maybe I'm too boring for it.At this point, the whole product feels like a beta implementation with limited features.  Down the road, this might have more features and usefulness, but until then I don't think I'd recommend buying it.