I haven’t tried humming with Shazam recently, but I don’t think it worked well back when I did have the actual app. It works very well for music though. I used it around five times, just this Wednesday night at a concert, and it got every track for me.

Soundhound is what had humming “support” explicitly in its product description, and it worked pretty well from what I remember. It’s been long enough though that I may only be remembering the times it worked.