Attention: Viewranger has been switched off!
The instructions below are therefore outdated - the Viewranger app has been replaced by Outdooractive. But don't worry - Outdooractive also has extensive map material for offline storage on your smartphone! However, a PRO membership is required for this. All information about the functions and prices of the PRO membership is available directly on the website at Outdooractive.com.
Instructions in 7 steps (Warning: outdated instructions for Viewranger!)
Unlike in the past, most smartphones these days can open GPX files directly in the right app. In the past, this usually required an import via Dropbox or via iTunes / PC synchronization. In the meantime, however, Android and iOS have learned something new: As soon as an app such as Viewranger is installed on the smartphone, GPX files that you have sent to you by email or that you have downloaded via the browser on your mobile phone can be transferred directly to the correct app be opened.
Unfortunately, this function is somewhat hidden, especially on iPhones. Using the example of a GPX file download at www.costabrava-wandern.de, I show how it works with an iPhone (iOS version 13):
If you clicked the download link for a GPX file, you will be asked whether the GPX file should be loaded (step A). If you use the default Safari browser on the iPhone, the file is stored in the download folder, which is made visible by the symbol in step B. Clicking the icon displays the downloaded file (step C).
Clicking on the file displays the rather cryptic GPX file in text format. By clicking on the forwarding symbol at the top right (step D) you will get to the dialog where you can choose which app you want to use to open the file. Possibly. "Viewranger" hides behind the "More" item (step E). When you arrive at "Copy to Viewranger" (step F), you are almost there! Then the Viewranger app should open, you have to confirm the import of the file there again (step G):
PS: If you send the GPX files to your smartphone as an e-mail attachment, you go into the process in step D. This works quite well for most Android smartphones (and of course slightly modified compared to the screenshots above).