first let's talk about price the Apple watch Ultra 3 comes in at $799 which is $150 more expensive than the Galaxy watch Ultra priced at $650 however there's more to the story than just the cost each watch is compatible with specific phone platforms Apple watch Ultra 3 is designed exclusively for iPhones specifically the iPhone 11 or newer running iOS 18 or later on the other hand the Galaxy watch Ultra works with Android phones and if you're a Samsung Galaxy user you get even more exclusive features both watches are built for rugged environments with military-grade toughness the Galaxy watch Ultra boasts Aerospace titanium an IP 68 rating and M STD 810h certification it can survive extreme temperatures altitude and environmental hazards the Apple watch Ultra 3 matches this durability with MLS STD 810h certification and its ip6x dust rating