Backup
The tracks and the photos are stored in the internal document area of myTracks. As a result, this data is also saved as part of a backup. For example, if you back up using iTunes, the tracks and photos will also be backed up. Restoring such a backup restores the tracks and photos.
It behaves a little differently when iCloud Sync is active. Then the data is no longer in the internal document area, but in the iCloud area. The tracks are thus no longer secured as part of an iPhone backup.
There is another way to save tracks and photos against data loss. You can export the data. Open the track list and then tap the Export button. Now activate the option Including subfolders and, if necessary, Including photos. Now tap the Export button again. myTracks now prepares the export file. Depending on how many tracks and photos need to be exported, this step may take a little longer, so it may take a few minutes. Keep myTracks open until the following dialog appears. You can then save the created file in Dropbox, for example, or in the iTunes file share. myTracks exports the data as a ZIP file. There is no function in myTracks to restore the tracks directly from the ZIP file, but in case of data loss, the ZIP file can be extracted in other ways and the contained tracks can be imported back into myTracks.