If it added the ability to either add custom fields or had a field for ISRC codes, it would be perfect.

Great app for simple tag fixes and a one time fee, instead of subscription, which I love. They recently made improvements, including dark mode option, Album Artist in addition to Artist (super helpful for Mac users since so many artists feature on other people’s songs), fixed column widths, the ability to rearrange columns in an order you most prefer, etc. Super impressed that they listen to feedback and try and incorporate feedback. Thanks!

I rent audiobooks from my local library which come in chapterized mp3 format. I use an MP3 stitcher program to knit them into a single file and then use this Tag Editor app to add the book cover artwork to the file. Works absolutely perfectly!

Implies you can try before buy, but nothing works accept reading files in till you pay $9.99. They say Batch in its description which you can sort of do as long as you make the same change in ever file. I wanted to add an indexed number. You can do the same Batch changes in the Apple Music app, just select multiple files. So far the only thing new it does, as far as I can tell, is lower/upper case manipultion of tags.