The WW app is similar to any weight loss/calorie type app. If you want weight loss, you have to track your food. It differs by having three weight loss options where you dont actually count calories. To me, it gives a little more freedom. If you are on a 1200 calorie plan and feel hungry at 7pm and you used up all your calories, you might not have that snack or apple. The zero foods give us options. Weight loss is a mental process. If you feel you can do the same on another app, go for it. I like the WW app with the recipes, articles, chat function, etc.