I was browsing Reddit earlier today and came across a story posted to r/privacy - "Headphones are collecting too much personal data". Before even reading the article my first reaction was that of complete horror. Why in the hell would headphones or earphones need an application on your phone? The article is a pretty good so just head on over - there's no point in me re-iterating most of it.
Suffice to say, I do not think there is any need for an application for headphones/earphones, especially ones that require location data or phone home constantly. Utter madness how much of our personal data we just happily give away without a second thought.