Although many people want to track their weight and the number of steps they take in a day to get a better sense of their health, some people are a little more, shall we say, excited, to get on the scale every morning. Athletes and people who train regularly likely want a scale that has not only great features, but also a companion app and tools that can help them on their journey. We note in our reviews which fitness and health tracking apps each of these scales support. Some work with apps that calculate your training intensity day by day, chart your VO2Max, lactic acid threshold, and more. But if all this talk of VO2Max makes your head spin, you might prefer a smart scale with a simpler user experience.