recently I got me a pair of Soundpeats Air4 Pro; initially wanted to repurchase a pair of Air3 HS Pro that I had and was very satisfied with the sound but lost one earpiece and found out that replacing it is nigh impossible. so, Air4 was like $5 more and I wanted to try the ANC part of it. none of those models are in-ear headphones, I'm done with shoving things in my ear canals.

so the sound is OK to me (I have tinnitus and don't hear that well to begin with, so I'm not an expert on judging these things) but the ANC is not what I expected it to be. to me, what it does is just flood my ears with bass. the music i listen to and the occasional podcast sound OK to me but I don't perceive any noises to be "cancelled", i still hear all irritants (buses passing me by, dogs barking, people talking, etc.) but they're somewhat droned out by the bassy sound.

the way I understand ANC, it uses multiple mics to generate an inverse sound that cancels out the ones reaching the microphones. so this should work without music, i just turn ANC on and I "hear" silence. nothing close to that is happening.

anyhow, both of those have some app that you need to get from google play and I haven't done so for either of them. judgging by the screenshots the app doesn't do anything of value, so you're safe to run it without.

edit: I just checked and it appears I was the victim of wanting things to be true; the website lists the feature as "Hybrid ANC" (emphasis mine). I'm not even gonna bother with reading up what their definition of it is, so I guess it was a con job from the start.