I don't use any regularly, unless you want to count an internet browser. It's not overly complicated for a relatively healthy person to maintain their health. I

I don't use any regularly, unless you want to count an internet browser. It's not overly complicated for a relatively healthy person to maintain their health. If you have complications, then reminders and tracking would definitely be helpful. For me I'll look up a workout, or parts of workouts and ignorantly put them together (well not that ignorantly). Up every morning at 6:30, head to the gym (there's one in my building) or go for a run outside -- workout for an hour at least There are web-based calorie counters I've used to get a snapshot of my current state, then I continue to look away. The very odd time I'll weigh myself, but I don't own a scale. Once in a while I'll look at Apple's native health app for the step counter. The office I work in is a little more traditional, so there can be monstrously little movement in my day if I didn't work out religiously. It's good to get a glimpse at a figure once in a while.