This part of the app is to give you a general idea of what your dog should weigh and how many calories the dog needs on a daily bases.
The calculations are based on averages of your particular breed, size age and sex. If your dog is very active he needs more calories, and the other way around for less active dogs.
Always do your own due diligence: If you think your dog is to skinny or to fat, go to a veterinarian for advise. Never only trust an app if you are concerned with the health of your dog.
At the top the App tells you about the weight to height ratio (It’s the BMI for canines). The app also suggest the healthy weight for you dog. The image next top the self explanatory meter shows the shape your dog should have.
The bottom part tells you the calories intake for your dog each day.