[ska]

In my opinion you are missing two very key points.

1) Saying "well, you could just find this information some other way" may be true but useless - everyone has different mechanisms that work well for them. If it takes a device or app or whatever for someone to stick with a change they want to make, then good for them.

2) While there is definitely some general health and fitness advice that would benefit most people, it's terribly naive to believe the story ends there. Population averages are just that, every person will also have specific mechanisms and effects that are important to their own wellbeing and not particularly generalizable.

[hunvreus]

Fair enough. That being said:

1. It matters to me because I see this as a waste of resources (hardware, software, brains) for something that is near obvious. While it's anyone's choice to consume the way they want, I am just morally opposed to it.

2. What these apps address are general health/fitness metrics, in a very superficial manner. As I said, once we have more meaningful tracking I'll be onboard, for now these are rudimentary toys.