Shazam is another, Apple removed Admob, Bolts, Doubleclick, FB Ads, FB Analytics, FB login, Inmobi, IAS, Moat, and Mopub from the app and continued to update it.
I found the desktop app pretty useful in just identifying songs friends played when people were over, popular songs in commercials, and just popular songs that played when I lived abroad on tv. But as I thought about the security implications of apps like Alexa and Hey Google I eventually uninstalled it. Siri was always basically useless so I kept it off mostly for that reason.