Translation of Tippfehler

Mr. Chang informed me that you have a customer that requires similar applications to what my customers have here in Switzerland. I am planning my next trip and I will consider visiting you too.
Language education is very important to me, because I really want to communicate with other cultures and people. If I could I would learn all languages: Spanish, German, French, Portuguese and Italian.
For quite a while we were considering to offer a downloadable version of Vocabulix. I could put a popup screen where it says: 'wanna download a Vocabulary Builder or continue with our online lessons?'.