Unfortunately, the Spire Stone app on iOS and Android no longer exists. Don’t waste $90+ buying this hardware that is just plain worthless. For no good reason, there’s an Amazon seller that’s still listing the item for sale. That’s just so wrong.
What Happened to Spire Stone?
The only indicator of what happened to it was a tweet reply that said Spire Stone support would end in June 2020:
And on the Spire Health website, the Stone basically quietly disappeared along the way in 2019 on its website, to be replaced with a newer product called Health Tag. The Spire Stone did have some neat features back in its day, as this screen shot of the Quick Start Guide shows—