Yeah, the Bose legal department is probably laughing right now at the easy slam dunk...
To elaborate, the lawyers will probably say the fact that it's made to work with their headphones, and the name which can be confused with theirs, means it's a misuse of their trademark, and it's confusing enough that people might think it's an official Bose app, and who knows what sort of nastiness might be hiding in there.
Should've called it "esob app" or something. Or wait for the cease and desist and rename it to "Butt-Head Headphone Company app" (reference: [1])
But then there would be a bit of a Streisand effect - as it draws attention to their lack of a non-phone tool to control their expensive headphones.
If they were to just shut Boze down, then they'll have angry customers.
If they were to create their own version of the tool, then most people would be happy.
If they were also prepared to give the Boze creator a fraction of the money earmarked for their lawyers, to pull the app and point to the official one - then everybody's happy.
To the corporation, the value of protecting their trademark vastly outweighs any profit loss from pissing off the couple of hundred people who are using this app (who, coincidentally, already own Bose headphones).
And not because they are evil... IIKC you have to demonstrate your credible effort in defending your trademark or you risk legally losing it. So even if you are ok with such use, you still have to defend your trademark legally or it can bite you in the future.
Which is always where these projects get screwed: the lawyers are able to get easy cease and desists and make credible threats for leverage merely due to trademark law; and yet somehow people make this same mistake over and over again :/.
That makes no difference: while I am not a layer and you absolutely should contact your lawyer before doing something like this to get your ducks in a row (and generally you would thereby be a fool to use what I say as "legal advice"), the relevant fair use here comes from legal precedent and even explicit exemptions required to ensure "software interoperability", not some concept surrounding "non-commercial use" (which I think is highly unlikely to protect you in almost any situation).
To elaborate, the lawyers will probably say the fact that it's made to work with their headphones, and the name which can be confused with theirs, means it's a misuse of their trademark, and it's confusing enough that people might think it's an official Bose app, and who knows what sort of nastiness might be hiding in there.
Should've called it "esob app" or something. Or wait for the cease and desist and rename it to "Butt-Head Headphone Company app" (reference: [1])
[1] https://en.wikipedia.org/wiki/Apple_Inc._litigation#Libel_di...