I came to the forum this morning and was going to ask the exact same question! I though lots of you used My Fitness Pal...but for some reason when I looked at it on my phone it didnt look like it was going to do what I wanted. Maybe I need to look again!
I installed a different one but it's not exactly what I want either...I think it's called MapMyFitness.
I just want to record my workouts (I don't want to have to use the app to workout), record what I eat (loosely, and not having to know calories myself), and record my weight on occasion...