Flightboard gives you updated information on all commercial flights depaturing and arriving on public airports in Norway.
For Oslo Gardemoen updated information about Flytoget (train from the airport) is given. Scheduled timed for depature and arrivals and alo information about any delay
Support for push is supported
Do you need to pick sombody up from the airport ? Get notified when any flight changes occour ?
Register for push notification and let the app do its work
This is an universal app. Buy once and run it on all your iOS devices.