Now I got a list of all days. The days for which I need to register my hours can be recognized by the plus symbol. Press on the plus symbol.
For the selected day, I can specify the Project, Relation, hour classification and the hours I have spent.
Press on the green submit (Indienen) button and you are done.
The iPhone app can be download via this link or scan this QR tag. Of course this app will also work on the iPad.
here (unfortunatly Dutch only).
Have fun with the registration of the hours you have spent.