Is there something like Mumble, but for async voice communication? Of the style of yac.com, or of the style of "voice recordings" you see in WhatsApp or Telegra

Is there something like Mumble, but for async voice communication? Of the style of yac.com, or of the style of "voice recordings" you see in WhatsApp or Telegram? I think that would be really nice for 1:1 and group chats in a work/friend context, especially spanning timezones, and where the point isn't to game or socialize in real-time, but instead around busy work/life schedules.