Cogdex Learn English Listening app for iPhone and iPad

Cogdex is for professionals who have already studied English, but want to become really fluent in the language, understand everything they hear, and speak with confidence. Cogdex lets you learn English (listening, speaking, reading, pronunciation, grammar, and vocabulary) primarily by listening to special audio and doing listening exercises.

The app also contains reference materials (vocabulary and grammar lists and explanations), language tests to evaluate your English level, and lessons that teach you how to speak and write beautifully.