A/B Audio 4+

Simple interface. Perfect for what you’d want this tool to do. The only thing it needs is to be able to individually set the play back parameters of each song. If I’m comparing my mix with another song, I would like to be able to scrub to each chorus, for example, individually and compare, instead of having to compare 1:22 seconds at each file.
I can see it would be useful to compare the same time too, if I’m A/B-ing versions of the same song. Maybe a toggle that allows you to turn on or off individual times?

For years, I’ve been putting my mixes into iTunes to get them into iTunes cloud to get them on my phone, where then I try to jump back and forth between two versions of a mix and skip to the same point to compare them. It just never really worked well. Plus, iTunes/Apple Music player is often doing its own volume adjustments and sound tricks, so it is hard to really gauge a mix in there.

I finally went looking for a comparison tool and this is perfect.

It can import from iTunes or iCloud Drive, which is much nicer than filling up my iTunes library with dozens of different mixes. Especially in the final album stage when I just want to evaluate the whole work.

It has already made my mixes better. It’s easy and quick to jump between A and B version, and to scan through time with both files staying in sync.

Sometimes you wish you had a certain tool, do a google search, find exactly what you're looking for, buy it, use it, be impressed that it works exactly how you imagined, then come back and write a 5-star review for it. Thanks!