It does, yes, but it simplifies it. Weight Watchers is needlessly complex as it is proprietary walled garden ecosystem. It also has a support and shaming element (for which you pay).
Weight Watchers assigns points based on ingredients and amounts. This just uses straight up calories. Difficulty with Weight Watchers is it takes time to do data entry, and you cannot always accurately put it in because of complexity or incomplete database. With this, you still won't know how much calories something from a restaurant contains but every time you make your own food you can see the package. Except on fresh food such as vegetables and fruits you prepare yourself.
Weight Watchers assigns points based on ingredients and amounts. This just uses straight up calories. Difficulty with Weight Watchers is it takes time to do data entry, and you cannot always accurately put it in because of complexity or incomplete database. With this, you still won't know how much calories something from a restaurant contains but every time you make your own food you can see the package. Except on fresh food such as vegetables and fruits you prepare yourself.