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There’s no need to make this an app on a smartphone. For mere dollars we can build this out of off the shelf components, as a small single purpose device. Make it Bluetooth compatible if you want.

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There is no need for an expensive custom device. We already have plenty of phones.

Until you get killed by a hacker, or your device manufacturer silently changes camera firmware to include shitty AI updates to your computational photography device and breaks the app etc. I'll buy the actual medical device, thank you.

Maybe I'm misunderstanding, but this seems like a pretty unlikely threat vector.

I’m sure they’ve thought about it, but I’m also curious about the risk of coupling an OTC medical device to the implementation details of a smartphone. Apple never intended the iPhone’s haptics or camera to be used this way, and could change them with a soft update at any time. Seems risky to trust the results without owning the supply chain or at least having guarantees.

And then Apple changes some mechanical aspect of the haptics actuators and suddenly you are getting false results without knowing it.

I’d rather get a custom device if my life depends on it.

It doesn't take much of a smart phone, which many already have though. I'd rather buy someone a smart phone for this purpose than a custom, one-off testing device.

I trust the one off more.

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