I have been testing the waters and on iOS AudioBooth is the client i would recommend.
https://apps.apple.com/gb/app/audiobooth-audiobooks-player/id6753017503
Official ABS client via testflight drains the battery more and can be connection issues when ABS server is behind a VPN (iOS vpn implementation is one to blame). Plappa as mentioned is a second best client in my opinion.
I have been testing the waters and on iOS AudioBooth is the client i would recommend.
https://apps.apple.com/gb/app/audiobooth-audiobooks-player/id6753017503
Official ABS client via testflight drains the battery more and can be connection issues when ABS server is behind a VPN (iOS vpn implementation is one to blame). Plappa as mentioned is a second best client in my opinion.