This morning i wanted to know if every train will be in time. So i decided to download the "Bahn App." It is called DB Navigator. Then i tried both. Calculate the route on my iPad and calculate it on my Browser. It is much easier to navigate with the iPad. The App. is so intuitive.
I used the following tutorial and it is very easy to understand. Now i am searching for a little nice project and a good book to learn more about iPad programming.