RingtoneStudioPro could be great, but it’s unfortunately got two big issues that are hopefully just bugs:
1) The file titles all say “no title - no title” — it’s not importing from the file name and there’s no way to edit before or after the ringtone file gets saved.
2) RingtoneStudioPro is not showing most of my iTunes songs, whether they are DRM free or not, in iCloud or downloaded to my device. About 20 random songs are visible in RingtoneStudioPro . I have MANY more songs than that downloaded as DRM Free content, as well as from Apple Music. I know the latter often isn’t compatible, but DRM Free Downloaded music should be visible. Yes, I granted all permissions.
RingtoneStudioPro hasn’t been updated in more than a year, so maybe the developer will do so soon because there’s clearly a couple of major issues that make RingtoneStudioPro unusable — which is a shame because it’s got a great UI and is easy to use. I hope this review will lead to some updates that fix these problems. I’m using an iPhone XS Max, iOS 14.6.