NutriGuide is an app that tells guides you as to how much you should feed your cat or dog. You enter your pets weight and special considerations such as working, expecting, lactating and the results will show how many calories (kCal) your pet requires per day depending on the amount of activity it does. The figures shown are for a guide only and should not be taken literally as every animal would require slightly different amounts of food for a healthy body. The information used by the app has been taken from many sources as there is no exact formula available. An average has been used from the various sources although the author does not have a medical background.