i don't think there's any "free" ones...i've looked and i really would luv one as i'm traveling to europe soon. though, i've been demo'ing the Mobilearn Phrasebook and i seems pretty good and the speech from native speakers sound the best out of the three i've tired.
here's the link's so you can try them yourself and find which works best for u...single languages are like $25 and the packages are like $100...pretty expensive in my book, though i might have to shell out for it cos i feel as though i will need it for my backpacking trip.
Mobilearn
http://www.handango.com/PlatformProd...=18969&R=18969
H&H
http://www.handango.com/PlatformProd...43273&R=143273
Lingvosoft
http://www.handango.com/PlatformProd...79305&R=179305