Horrible. At some point (long ago) the app went "we can't service this ancient relic. Update." So I did. For the past year, if not year and half the app doesn't recognize my steps. My built in pedometer says I did around 10k steps today. The app? Zero. I did my best to appease the app, but nothing works. At this point I open it just for the daily awards. Edit: I do have the newest version. That's the problem. Ever since you updated the app, it doesn't count my steps.