Seems like there are a bunch of alternatives popping up including some DIY solutions. Which is really awesome in this space. Check out https://www.beanstalk.club/ I've done some work with these folks. I love their bring-your-own-phone approach. There are so many cool old-school phones out there, even on ebay. We've also seen lots of success with Beanstalk and a simple $20 cordless phone. Kids love wandering around chit-chatting. There's also a ton of momentum around the https://www.waituntil8th.org/ pledge.