PointsPlus
In November 2010, Weight Watchers announced that its Points system was being replaced by a new PointsPlus system. The old system was based on a calculation based on calories, fat, and fiber content. The new PointsPlus system is based on protein, carbohydrates, fat and fiber.
or
where all units are grams. This formula is an empirical match to the Weight Watchers calculators and may not be exact; Weight Watchers has not published their actual formula.
ProPoints
In the UK during November 2010, Weight Watchers announced that it’s Points system was being replaced by a new ProPoints system. The old system was based on a calculation based on calories and saturated-fat. The new PointsPlus system is based on protein, carbohydrates, fat and fiber.
where all input units are grams. This formula is an empirical[11] match to the Weight Watchers calculators and may not be exact; Weight Watchers has not published their actual formula.
This is a matter of public record from U.S. patent filings.