The whole point of the Alo Diet is to avoid counting calories as much as possible. You should be able to eat as much as you want and to your satisfaction, as long as you eat the right things. However, if you are having problems losing weight and are not making any progress, you can follow the rule of one third.
If you simply take what you normally eat at each meal, and eat only one third of it. You will lose weight. If you want to count calories, eat only one third of your average. You will lose weight. If you don’t want to count calories, fill up your plate, as you normally would, then eat only one third of it. It’s that easy.