You don’t need iOS 14 to run it even.
In fact iOS 13.5 runs on the iPhone SE, so if it is advising iPhone 7 or later then there must be other technical reasons it doesn’t specify.
I was amused by this:
“Other recent headlines suggest that the new app has a 1% false positive rate which could lead to 600,000 people isolating for no reason.
But while there is that risk, the short answer is that you should download and use the app”
It
So that’s alright then.
Actually I’m pretty sure the 1% / 600,000 needlessly self isolating was a leading statistician’s damning assessment of “Moonshot”, not this app.