What makes this tool very useful is it's database. We have analysed a big pack of text from different sources, and have collected the most important words used in the everyday language. This big bunch of words is the base of this application.
When studying languages there's another important thing. You need to learn the pronunciation, which could be very hard in some cases/languages. So we have licensed high quality TTS engine from Loquendo, and made it available in Vocabulary Trainer. How does it sound? :)
Initially Vocabulary Trainer will be available in four version: Spanish English, German English, French English, Italian English. We'll let you know on Twitter when it passes Apple review.

