All the hikes include a GPS file in a GPX format in the download pack. You can use this file with any outdoor navigation app of your choice.
In addition to that, most of the hikes come with an eBook in a PDF file. The eBook includes links to the GPS routes on the Outdooractive platform.
To follow the hike with a GPS App on your smartphone, please download the OutdoorActive App.
After installation, if you are not already registered, please register to the App (Free).
The app works well in the free version. However, you might want to upgrade to a Pro license (30-day free trial) since it offers the option to download the map and the route for offline use. In the free version, you should initiate the navigation at a spot where there is cellular reception, after that it will work also without it.