If you are correct, which I believe to be the case, then it is surprising that Apple Music is ahead of Spotify in the US. I would assume that that there is some correlation between these unique visits and paying customers - not 1-1 since both AM and Spotify offer free options. Again if true, either Apple is monetizing their app faster than Spotify or there are a lot of Spotify users paying but not using their app.You're use would only count as 1 unique visit per month. The survey is about unique, or new, visits per month not quantity of visits over all.