I have myfitnesspal on my droid phone and it works great!
At my 3 mth check up - the dietician told me to eat more - to about 900 cal per day. He didn't give me specifics about carbs/fats. He suggested cutting some protein at meals - instead of 3 oz protein - make it 2 oz leaving room for carbs and fats. ALWAYS - make sure it is over 60 g protein.
I printed out the food diary for him to see and that is when he mentioned to add more vegetables/fruit - more carbs.
I am playing with the carb/fat count to see what works for me - somedays I don't lose and others I drop alot - hard to tell. I keep tracking and tracking and hopefully I will find a trend.
Good Luck!
Ann