Both sites list many, many foods, including some name brands, and give sodium content, potassium, phosphorus, and other minerals as well as calories, protein, fiber, etc. One of the sites lists low potassium foods and low phosphorus foods. I asked my nephrologist if I could trust the information and she said yes. This information has been invaluable to me since it has helped me learn which foods are kidney friendly and allowed me to calculate amounts and percentages of entire meals in terms of sodium, phosphorus and potassium especially, which CKD people want to limit. Occasionally there is a milligram of difference in a value between the two sites but all in all they complement each other. The search tools are great, you can look up so many things and doing so has helped me create some fairly tasty and satisfying recipes.