Take those phone app sound level figures with a grain of salt. The apps have big limitations. Sound measurements in general are complex and controlling variables between cases is difficult.
But if you're pleased with the sound of the aftermarket...
I know, I don't use the numbers as gospel. But I use them as a comparator for difference. It DOES show a difference and again... I can hear a difference, so...
I've bought and used MA on ALL my drones Air 2, Air 2S, Mini 2SE and now my Air 3.
Reputable company and reliable props. A little less db and a little more flight time.