I love the idea of this, but its always at a bad time (8 pm eastern is dinner time for us) or I'm just so overwhelmed, I don't have an hour to spare.
Personally, I've liked SimpleX and have it on my phone, but since I'm not super available, you don't have to change things for me.
I haven't participated ever. I don't know if it is audio or text. If it is text, you could just have a passage, question, or subject for the day and let people chime in throughout the day when they have time.