Real-time, inter-app audio pipes on iOS

If you work on audio applications, you need to check out Audiobus. It’s a mechanism that lets you communicate with other apps running on an iOS device at the same time. It probably uses the 10 minute background task grace period to get it’s work done. Either that or the background audio multitasking permission, but I don’t know how two apps can pull that off at the same time. Regardless, this is remarkable.