You can email a copy of your LogTen Pro Backup to yourself or anyone else.
Just press: More > Settings > Backup
Press the + sign to create a new backup or choose an existing backup and swipe right. This will create an Export button which you can select to email yourself the file.
The file will arrive as an attachment in your email. You can save the backup file attachment to any location for safe keeping or just leave it in your email. Later if you need it restored just contact support and we can help.
Or you can also manually install the logbook file on iOS using the iTunes File Sharing feature. See this article.