I have used Chronometer, it takes a little patience to navigate the site, maybe enter your own home-cooking recipes and work through the routine of your diet, but after about two weeks it gets easier and faster to use. Enter food names in the search and it will give you good tracking of all the nutrients, amino acids, vitamins, minerals, calories, water intake, fiber....pretty much everything. I do a lot of shopping at Aldi, most the brands they sell are in the Chronometer database. If you dine out, most of the food items with the chains are found in the database too. I used Chronometer heavily for about 3-4 months. Now that I have a good handle on the variety of foods I can eat, I haven't used it as much. It's a really good place to start when you're in the 'I'm lost and don't know what to do' phase of CKD.