I have tested Apple's USB-C adapter with my Android tablet and believe me, what Amir says in that test is really true:
Note that my testing is all on Windows. I attempted to test on my Samsung S8+ and got odd results. Using both Google dongles, all they did was route the not so good sound of the internal DAC through the dongle (???). With Apple dongle I got music but level was very low. So if you plan to use the Apple dongle on an Android phone, you should do some compatibility testing.
To get the combination Android + Apple's USB-C to work well together, a small pre amp that boosts the signal is really needed.
Generally speaking of USB C DAC dongles, DO NOT buy any through a EU country (EU zone) as they often have that damned "amp brake" (reduced gain) in them. That's because EU's zealous bureaucrats has "realized" that we cannot cope with such dongles with too much amplification. Risk of hearing damage (that's what the bureaucrats think). As if we citizens are not old enough to cope with a volume control. Which is, I think, bloody ridiculous.
What will be the next step? Amplifiers, power amps with a maximum of X watts may only be sold?