First week on MyFitnessPal after ending my 14 month "affair" with Weight Watchers netted me a 3 pound weight loss, leaving me 22 more pounds to goal weight. The difference in the programs (for me) seems to be the extra 49 "points" WW gives a user every week - there's not a similar extra caloric binge available on mfp. Times when I am staring at that 17 point (600+ calorie) danish that I could have eaten on WW and cannot on mfp - - Yes, it makes me want to cry, but WW lets me eat it and mfp turns me away. Result? Back on "Trac".
So here's the 20 month overview: I started at about 300 pounds in August 2011. I lost about 25 pounds on exercise alone thru January 2012, then joined Weight Watchers. WW gave me 40 pounds of weight loss, down to 235. My goal weight is 210 and I have decided to use mfp to knock out that last 25 pounds. First week on mfp = 3 pound loss, so 22 to go!