Bonjour @[deleted], you can use AirDrop to share your GTL sessions between devices.
Take a look here, specifically at the "How to Share via Airdrop" Section:
https://grouptheloop.com/documentation.html#Exporting/Importing%20a%20Session
You can also share via iCloud if the devices are not on the same network. This Video demonstrates.
https://www.youtube.com/watch?v=6JvijqMWG4g