I honestly think this would be very useful. Nothing much, just a small companion that allows you to collect resources, heal dwellers, or send them to and from the wasteland. No need to make the whole game, I just thought it would be nice since I keep getting notifications on my watch, and I think that it would be more convenient to access it on your wrist rather than pulling your phone out to respond to the message.

There's no announced plans for Apple Watch support, but I've actually received a few game-related alerts on my Watch.