Behind the calculation logic in DogDays lies the experience of all the old ways of calculation as well as taking into account the estimated life expectancy of each dog breed, compared to the average life expectancy of humans! And that all dogs, regardless of breed, reach the equivalent of human puberty during their first year of life. You will find that the estimates feel very reasonable. The app's languages are English (US and UK), Swedish, French, Spanish, Italian, German and Ukrainian, as well as Chinese.
This is the simplified, free version without the option to save your dogs.