Just a note that might save someone else some time, not only does the new Pollen Count app require a developer key from tomorrow.io, it also requires a paid tomorrow.io account as pollen is not part of the free data.
This doesn’t make it a bad app, but these requirements should be stated so users know what they’re getting into. (Also, brace yourself for an onslaught of email from tomorrow. io once you sign up – they send a ridiculous number of follow-up spammy emails)