The first option. A smartphone app is called en app or en applikation.
I did not understand the english translation. In german the translation "Anwendung" is only understandable in a special context, for example in medicine it could be a physiotherapy or so. And we know it also forthe programs of a computer or a smart phone. -- But application for job is absolutely new for me.
Hi GnterSchap. I'm glad you are making progress in the Danish course and I appreciate it can be difficult to learn via a third language. If you are in doubt about the meaning of an English word, please ask. I or someone else will try their best to give you an answer that makes sense. But please keep your general comments about what the English words would be in German to a minimum. It is not relevant to these sentence discussions.