Someone at work was walkie-talkie-ing with his child at school using something called #Relay https://relaygo.com/ ... has anyone heard of this before? Opinions?

I’m not planning to buy this for any grandkids, but I sent the link to #sonOne and #Daddy_A (who both have school age kids) for them to decide for themselves. I made sure to say I wasn’t endorsing it, having just heard of it right before I sent them the link.