If you are caching with an app, you might log your findings as drafts on geocaching.com with your geocaching app. When you are back on your computer, you can order cachetur.no to download the drafts for you. In the Post-trip assistant, you find Logs, and then Import drafts from geocaching.com:

You will now get a list of all the drafts you have on geocaching.com. If you have drafts from several trips, be sure to check the date and time of the logs before the import. You may choose each log individual (1), or choose to import all (2). When ready, press Copy (3).

Your chosen drafts will now show up as logs in your trip.

The drafts will still be on geocaching.com, since cachetur.no has no power to remove them. So after you have submitted your logs, you will need to delete the drafts yourself in order to keep things tidy.