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Diet Power is the only weight-loss software that guarantees achieving your goal on your target date. Our award-winning program makes any diet* more powerful by managing what all diets have in common: calories. It also helps manage your nutrient balance.

Unlike other programs, Diet Power "learns" your metabolism by monitoring how your meals and exercise affect your weight. It also improves your balance of 33 vitamins and minerals by recommending foods you like. It even calcuates a Nutrition Quotient™ showing how SMART an eater you've been. No other program does any of this.

Our software's extraordinarily deep personalization has evolved since 1988 under the guidance of leading experts in nutrition, physiology, and behavioral science. But the program has also been tweaked by ordinary users demanding lightning-fast performance. That's why weight watchers around the world rate our diet software the best.