No, sorry, I haven't. I happened to have iMazing because it came part of a bundle of other apps, so I didn't buy it "on purpose". It just happens to do the job.
I used to have a similar app for my old iPhone but Apple nobbled that too (without exception, every time I get the functionality working on my iDevice, Apple remove it with an update - my previous phone I didn't update for over 18 months). I won't update my iPod again unless it's to jail break it (which is next on my list of to dos to see if I can get it talking directly to Calibre again - my preferred option).
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