As a developer I will never develop for, support, condone or recommend Apple products to anyone I know because of such behaviour, they want a wall garden, good for them, but I'll have no active part in it.
People are dumb.
Someone, probably very soon, and probably more than one or even ten people, would overload the weight and crack their screen. At which point they would show up at the Apple Store DEMANDING a brand new phone.
When they didn't get the repair because they're too stupid to understand how glass works they would contact CNN or HuffPo or whatever and there'd be a flurry about "glassgate" or something. Same way that putting a thin phone in your back pocket, SITTING on it and then complaining it bent set off a huge issue and tons of news coverage.
There is a walled garden, this is not an example of Apple overreaching though.
So people are going to think "My iPhone isn't weighing this accurately! It must be defective!" because Apple never intended for the technology to be translated into a scale.
is that really something Apple would have to pay for? seems like something like that would fall well in "your fault" territory from my perspective.
my first thought was drugs, might be handy to have a scale in my pocket sometimes.
I would kill for that. I diet in a geeky way, weighing everything. I have often thought that some kind of foldable scale that fit in my shirt pocket would be nice.
To be fair, earlier phones didn't have the problem. My Motos and iPhone 5s took back pocket tension like a champ. iPhone 6 had to be replaced within 10 days.
Statistically speaking any meaningful way to reduce phone handouts is probably worth the negative publicity.
Banning this app is one such way.