Wow! Pretty lame that an iPhone 5 -- which is barely two years old, and still the phone 90% of the apps on the App Store are "optimized for."
From what I can gather of the Health App, it relies on third-party apps and hardware devices to collect and aggregate data. No major chip capability issues here that I can see. Maybe some newer third party hardware devices are not compatible with the iPhone 5, but virtually all third-party apps are, and that's all I planned to use; and I'm sure the vast majority of fitness and health hardware devices are compatible too.
According to the Health Apps "Sources" settings, I have two apps on my phone that should sink with the Health App: myfitnesspal and Runtastic Pro. All the apps recognize each other and are setup to share data with each other. This despite, the fact I unfortunately only learned today in this thread -- that iPhone 5 is not supported for such a basic data collecting and and aggregating tool. I'm both dismayed and stumped! And why does the Health App pretend to work on my phone? For that matter, why was it ever installed on an incompatible device?
In short, I believe Apple could have easily made the Health App compatible with iPhone 5 -- even if the iPhone 5 might not support all hardware devices. That would be a minor nuisance given the vast supply of compatible hardware and virtually all software.
Instead, they deliberately chose to force obsolescence on their customers and rolled out the Health App without even a footnote on compatibility to all iPhone 5 users. (Adding insult to injury, the Health App is a permanent squatter on my phone and cannot be removed.)
I'm disgusted! This has to be one of Apple's biggest rollout gaffes since the Maps app. And it's inexcusable for a top premium brand like Apple. Heads should roll.