The official WhatsApp app is now available on the Apple Watch for everyone, following a brief beta testing period via TestFlight last week. The app allows you to send messages, read full messages, send message reactions, record and send voice messages, receive call notifications, and more — all directly on your Apple Watch, with no need to take out your iPhone. Meta's announcement highlighted some of the key features: Call notifications: You can see who's calling without looking at your iPhone.