Does anyone here regularly use a weight loss or fitness app? I am struggling to lose weight and I need to find some accountability.

I like the idea of something with a community base but I haven't found something that seems quite right yet. I think part of my issue is I lean towards being pretty private and weight isn't something I really talk to family about and I am the heaviest of my close friends. On the other hand having a buddy might really help!

I do use RunKeeper to track walks but I don't use any of the other features. I am leaning towards LoseIt.com and their app but I can't figure out the community part of their site.

Any suggestions? Thanks!