Meal subscription with portions set by caloric limit? I have been looking around for a meal subscription service that might base its meals around a caloric limit. I have found that Blue Apron, Hello Fresh, Plated, etc all seem to have wide ranges from as little as 480/serving to 1010/serving.

Is there a service that is based on "our meals are garunteed to be between 450 and 650 calories" or something like that? My googling doesn't seem to turn up anything similar.