Is the ccc one app compatible with the Apple Watch
Is the ccc one app compatible with the apple watch
Question marked as
No. If this is the app you're asking about: https://apps.apple.com/us/app/ccc-one-mobile-appraiser/id665376855 This app is made for iPhone. The app developer has not made a version for Apple Watch. If this is something you'd like to see, you'd need to reach out them directly as Apple doesn't own CCC.
How to contact an app developer - Apple Support