What in-app purchases are available with Apogee MetaRecorder, and what do they do?

There are two in-app purchases available to enable unlimited recording time:

Unlimited Recording on a Single device (for purchase or free with compatible hardware): when this in-app purchase is completed, you have unlimited recording time (based on available device memory) on a single device. It’s still possible to connect Satellites, but the Satellites’ recording time is limited to 60 seconds. Unlimited Recording on a Single device is unlocked at no cost by connecting compatible Apogee or Sennheiser audio hardware. See this article.

Unlimited Recording on Multi-device systems (for purchase, and lower cost if already upgraded to Unlimited Single): when this in-app purchase is completed, you have unlimited recording time (based on available device memory) on a multi-device Master. The in-app purchase may be downloaded to any other devices that share the same Apple ID at no extra cost - when these devices are configured as Satellites, they have unlimited recording time as well.

There is also an option to purchase Support for Timecode Systems UltraSync BLUE timecode protocol over Bluetooth.