Tune Blocker for the Apple iPhone blocks iTunes to charge
There are times when you want to charge your Apple iPhone from a computer without having to sync to iTunes, and not worry about accidentally deleting all your music tracks, and this is where Tune Blocker steps in.
Tune Blocker, according to the website is the best way to charge & sync your Apple iPhone or Apple iPod Touch. Tune Blocker allows the iPhoner to choose whether to charge or sync to the iTunes library.
Tune Blocker will “block” iTunes when the iPhoner wishes to just charge the Apple iPhone, and can plug and unplug without any warning messages, and protect your music from being overwritten. Tune Blocker is available with a 3ft cable for $24.95 or 6ft cable for 29.95.
Source — matias