Let's start with some proof. Screen recording when using this free app as it was Premium
Worked for me via every phone I've got under last two plus years.
Shall say, this is for Android users, no root needed nothing. You login with your user/pass (after installed the apk) Then it's done - No Ads - No payments.
Order by either send an email to firstname.lastname@example.org or directly on spotify.hko.se - You'll get the app downloading link directly after payment.