I was dismayed to discover that this app requires me to jailbreak my iPod Touch in order for it to be used. I don't have a problem with jailbreakers, but I do feel that the app description should state this more clearly. I would not have downloaded it if I'd known this.

But that brings up the question, why require disk access in the first place? TuneAid works fine with my non-jailbroken iPod. All I want is to copy playlist information back from my iPod to iTunes, and I know the information can be read without jailbreaking, so why is this app so demanding?

People ask why pay so much for this program? Well, it works and has continued to do so for five years. The developer has always gotten back to me within hours, usually within minutes, when I've had an issue; one time he developed a "mini-fix" on the fly for me that allowed me to keep going rather than make me wait for the general release update.

Also the program is under constant development and is continually improved. The speed of file transfers has gotten much much faster in recent months, the interface has been totally redesigned, and when new versions of iTunes or OS X are released that "break" the older version of iPod.iTunes an update is usually available within 48 hours.

I use a $24.95 program on the Windows side to do the same tasks; imagine my dismay after buying the new Nano to find that this (Windows) program knew nothing about duplicates and I had to spend time going through my music library deleting dupes one at a time. That's not a problem with iPod.iTunes which while eliminating duplicates is smart enough to know that a song at 192kbps is NOT the same as the same song at 224kbps, and that you might want both.

I've tried a lot of the cheap and free iPod transfer programs over the years but have found nothing that offers anything close to the power, flexibility, and support of iPod.iTunes - sometimes you really DO get what you pay for.

Can we get past the seemingly mandatory explanation that the iPod doesn't sync in both directions and thusly we need a helper app? That said, Senuti is free, I had no problems in recovering the 5581 songs lost when my hard drive took a dive using Senuti. Hats off to anyone who cares enough about the community to donate their work.
For more functions, iPodWorks is a great $8 option.
I can't explain the technical aspects of iPod or iTunes song filing functions, but if I can get the job done for either nothing or $8 why the heck would I want to spend $39?
I wish the developer well, however this is too much for a one trick pony, I only spent $129 for my copy of Microsoft Office.
And one more thing, please no more kissy-kissy reviews from developer 'friends", I still won't pay you $39.

This software seems to have quite a few reviews that sound like they are written by the developer or someone involved in the app.

Macupdate should check it out. Especially Sevren, the guy that knew the developer by name and a few others that only reviewed this and no other program.

To answer the original question, the iPod can only sync in 1 direction, this let's you sync the ipod back to iTunes.
There are much cheaper alternatives, even free options to do this. $39 is way too much, even half that is pushing it with alternatives such as iPodRip and el iPodo available.