How to install WhatsApp on my Apple Watch?

Hi yoav212,

Thank you for using the Apple Support Communities! We would recommend the guidance below that can help:

Download apps on your Apple Watch

If you can't find an app

•On your Apple Watch, apps appear on your Home screen. Press the Digital Crown to see the Home screen.

•If you don't see an app on the Home screen, you can see a list of apps that you bought and redownload them. When you redownload an app, you don't have to pay for it again.

•Some watchOS apps are not currently available in every region or language. If you can't find the app in the App Store or on your Home screen, see if the app is supported in your region.

Hope this helps!

Have a great day.