Have a look in the app store and watch out these great and usefull language apps. 

This easy-to-use talking travel dictionary with superb audio output is more of a vocabulary trainer and dictionary than a translation program. Admovi has developed iSAYHELLO to equip all iPhone/iPod Touch owners with a simple and portable as well as active basic vocabulary in 10 compact lessons!

The phrases – professionally spoken by native speakers – provide additional support for learning the correct pronunciation, and facilitate your understanding abroad – iSAYHELLO to the world!

The iSAYHELLO features:

+ 10 lessons, with vocabulary and spoken phrases for the situations that occur most frequently when travelling or on vacation.

+ the natural voice, to the highest standards of quality and professionalism!

+ all texts are spoken by native speakers!

+ effortlessly simple user prompting!

+ the most popular phrases always available at a glance!

+ fully functional offline application – unencumbered operation!

iSAYHELLO grants you linguistic knowledge in 10 clearly laid-out lessons:

+ Everyday Use

+ Arrival / Customs

+ Greetings

+ Smalltalk

+ Hotel / Money

+ Shopping

+ Meals & Drinks

+ Flirt

+ Emergencies

+ Numbers

Check the available language combination and you will find the right one for you.

www.isayhello.mobi/en

iTunes:

http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=324172018&mt=8

Ultralingua, makers of popular download and online dictionaries, has released the much-anticipated update to its iPhone dictionary applications. Ultralingua dictionaries for iPhone are now compatible with the iPhone OS 3.0 operating system. 

Ultralingua offers two lines of dictionaries that use the same advanced dictionary and conjugation engines. All Ultralingua-powered dictionaries offer the same feature-rich, easy-to-use interface, tailored to your favorite platform.

Ultralingua titles offer thorough references with indications of context and usage; Collins titles offer premium content with even more richly edited entries.

Each contains up to 250,000 entries per language, along with idiomatic expressions, technical terms, and slang. Users can use the Verb Book function to

Version 1.2 includes Verb Book and iPhone 3.0 compatibility

view any form of a word (in most languages) when searching — from subjunctive to feminine plural. 

http://www.ultralingua.com/en/iphone-dictionary.htm

Available language sets include English, French, French-English, Spanish-English, German-English, Italian-English, Portuguese-English, Latin-English, French-Spanish, French-Italian, French-German, Spanish-German, Spanish-Portuguese, English-Esperanto, and English-Klingon.