Is the android smart watch compatible with Apple phone

Compatible with iPhone devices but cannot connect via the Clock app. Can only connect with the Samsung Watch app or apps available on the AppStore. Features such as call notifications, sms or other supported applications may be supported.

If you're looking to buy a smartwatch, why would you even consider an Android watch, when Apple Watch is specifically designed to pair with and fully integrate with iPhone?

If the Android Watch is the one you want, you should ask Android this question. I doubt there are many if any on this forum who would even consider buying an Android Watch for use with an iPhone.