I tried Weight Watchers to lose 15 lbs and hated it. There was no andriod app and it meant weekly meetings with old hags and that doesn't work for me.
I DL'd this app and love it. It has a great database of food/snacks and drink items. It has a barcode scanner for prepared foods. It is based on calories and not a "point" system. Also has desktop access. I highly recommend this and I am in no way affiliated with the product.