Screenshots
Captured on iPhone. The overlay you see in the scoring preview is the same one composited into the live video.
Scoring
Whoever is scoring gets the whole match on one screen — scores, who is at the table, and every ball still on it. Tapping a ball pockets it and it disappears from the broadcast overlay immediately. Undo and redo cover every action, so a mis-tap during a rack is never a problem.
Getting started
Both phones run the same app; you pick a role when you open it. They pair over Bluetooth and peer-to-peer Wi-Fi, so a pool hall with no usable network is not a problem — and the streaming phone carries the broadcast over cellular.
Scoring from an Apple Watch
PoolCaster also runs on Apple Watch as a scoring companion, paired to the streaming phone over WatchConnectivity. Scores, the race target and who is at the table are all on the watch face, with undo — so you can keep score between shots without picking a phone up at all. The graphics on the live stream update from a tap on your wrist exactly as they do from the phone.
Like phone scoring, the Watch is free: only the phone doing the streaming needs a subscription.