Application Sync with Watch

From what I can see in the US App store, WhatsApp does not support the Apple Watch.

Hi

Whilst there is presently no WhatsApp Messenger app for Apple Watch:

Your watch can still be configured to mirror notification alerts from the iOS app on your iPhone:

• On your iPhone, in the Watch app, go to: My Watch (tab) > Notifications > scroll down to the list of apps > turn on the button next to WhatsApp Messenger.

It is also possible to send quick replies from your watch using WhatsApp Messenger.

• Note that this capability is not currently documented within the developer's support resources.

If you would like to suggest that the developer considers adding an app for Apple Watch, you can contact them directly via email: support@whatsapp.com

More information:

https://www.whatsapp.com/faq/

https://itunes.apple.com/us/app/whatsapp-messenger/id310633997?mt=8&

Note also that how notifications behave depends on the status of your devices and your settings. With Wrist Detection enabled, in order to bring notifications to your attention as soon as possible:

• If your iPhone is unlocked, you will receive notifications on your iPhone instead of on your watch.
• If your iPhone is locked or asleep and your watch is unlocked (regardless of whether the watch screen is asleep or awake) and on your wrist, you will receive notifications on your watch.
• If your watch is locked or has Do Not Disturb enabled, notifications will go to your iPhone.

More information:

About notifications on your Apple Watch - Apple Support