Ah OK I figured, but your reply was quoting the original post in this thread, which was about QuadStream. Regardless, the same answer applies to both apps. 10 devices registered to the same AppleID (or Google Play Store) can all run them at the same time. You'd only be limited by the number of concurrent streams or tuned channels you're able to feed each device. Although Channels DVR's "tuner sharing" helps quite a bit in this regard...
