Apple Watch Ultra 3 vs Samsung Galaxy Watch Ultra represents the closest flagship smartwatch rivalry in years, and a real-world step test proves it. After 6,500 steps in identical conditions, both devices delivered competitive fitness tracking, accurate heart rate monitoring, and nearly indistinguishable performance—leaving the choice between them far less obvious than their spec sheets suggest.
Key Takeaways
- Both watches track steps and heart rate with near-identical accuracy over 6,500-step real-world test.
- Apple Watch Ultra 3 integrates smoothly with iOS ecosystem; Galaxy Watch Ultra excels for Android users.
- Display technology differs significantly: Apple uses Retina LTPO, Samsung uses AMOLED with higher brightness.
- Battery life claims favor Samsung in marketing, but real-world performance depends on usage patterns.
- Design and durability are comparable, with both targeting outdoor and fitness-focused users.
Step Tracking Accuracy: Nearly Identical Results
The core finding from the 6,500-step comparison is that Apple Watch Ultra 3 and Samsung Galaxy Watch Ultra track movement with nearly identical accuracy. Both devices counted steps consistently, and neither showed the drift or lag that plagued older smartwatch generations. For runners, walkers, and casual fitness enthusiasts, this means either watch will reliably log your daily movement without systematic bias.
What separates them is ecosystem integration rather than raw sensor performance. Apple Watch Ultra 3 feeds data directly into the Health app on iPhone, creating a unified fitness dashboard that Android users cannot replicate. Samsung Galaxy Watch Ultra syncs with Samsung Health and Google Fit, offering flexibility for Android users who value data portability across multiple fitness platforms. Neither approach is objectively superior—it depends on whether you prioritize tight OS integration or cross-platform compatibility.
Display and Interface: Where Differences Emerge
The displays reveal the first meaningful divergence between these watches. Apple Watch Ultra 3 uses a Retina LTPO screen optimized for readability in sunlight and during outdoor activities, while Samsung Galaxy Watch Ultra features an AMOLED display with significantly higher peak brightness. For users who spend hours outdoors, the Galaxy Watch Ultra’s brighter screen becomes a practical advantage when checking metrics in direct sunlight.
Interface fluidity differs too. Apple’s watchOS feels snappier for quick glances and app navigation, while Samsung’s Wear OS 4 on the Galaxy Watch Ultra offers deeper customization and more third-party app support. If you want to install fitness apps beyond the default suite, Samsung’s platform is more flexible. Apple Watch Ultra 3 limits you to Apple’s curated ecosystem, which is simpler but less extensible.
Fitness Features and Health Monitoring
Both watches deliver comprehensive health monitoring, but with different strengths. Apple Watch Ultra 3 includes ECG, blood oxygen tracking, and temperature sensing, features that Samsung Galaxy Watch Ultra also provides. Heart rate accuracy during the step test was comparable between both devices, with neither showing significant variance from manual pulse checks.
Where they diverge is in sports modes and training analytics. Samsung Galaxy Watch Ultra includes more granular workout tracking options and deeper integration with Samsung Health’s trend analysis. Apple Watch Ultra 3 emphasizes simplicity and relies on the iPhone’s Health app for detailed trend visualization. For serious athletes who want to analyze VO2 max trends or detailed running metrics on the watch itself, Samsung’s approach is more immediate. Casual users will find Apple’s post-workout summaries sufficient.
Battery Life: Claims vs. Reality
Samsung markets the Galaxy Watch Ultra with longer battery life claims, and the specifications suggest a genuine advantage on paper. However, real-world battery performance depends heavily on screen brightness, workout frequency, and always-on display settings. Apple Watch Ultra 3 typically lasts two days with moderate use; Samsung Galaxy Watch Ultra stretches that to three days under similar conditions. For users who charge daily anyway, this difference is negligible. For those who travel or prefer minimal charging friction, Samsung’s edge matters.
Design, Durability, and Everyday Wear
Both watches target active users and deliver rugged construction. Apple Watch Ultra 3 features a titanium case and Sapphire crystal, while Samsung Galaxy Watch Ultra uses stainless steel and Gorilla Glass. Titanium is lighter and equally durable; stainless steel is heavier but feels more premium in hand. Neither material is objectively better—it is a matter of personal preference and sensitivity to weight during long wear.
Comfort during the 6,500-step test was comparable for both devices. The Apple Watch Ultra 3’s larger bezels took some adjustment for wrist space, while the Galaxy Watch Ultra’s rotating bezel added a satisfying tactile element to menu navigation. Both watches stayed secure during walking and light jogging without slipping or rotating on the wrist.
Ecosystem Lock-In: The Real Deciding Factor
The honest truth about Apple Watch Ultra 3 vs Samsung Galaxy Watch Ultra is that ecosystem matters more than hardware differences. If you own an iPhone, Apple Watch Ultra 3 integrates so deeply with your device that switching feels like losing functionality. Conversely, if you use Android, Samsung Galaxy Watch Ultra is the natural choice—pairing it with an iPhone introduces compatibility friction that undermines the watch’s utility.
Neither watch works optimally across both ecosystems. Apple Watch Ultra 3 requires an iPhone to set up and function fully. Samsung Galaxy Watch Ultra works with iPhones but loses access to Google Fit integration and certain Samsung Health features. For cross-platform users, this incompleteness is frustrating and represents the biggest weakness of the current smartwatch market.
Which Watch Should You Buy?
If you use an iPhone and value seamless integration with Apple’s ecosystem, Apple Watch Ultra 3 is the clear choice. If you use Android or value flexibility across multiple platforms, Samsung Galaxy Watch Ultra wins. For users who own both iPhones and Android devices, neither watch is perfect—but Samsung Galaxy Watch Ultra offers more cross-platform functionality through Google Fit.
The 6,500-step test proved that fitness tracking accuracy is no longer a differentiator between flagship smartwatches. Both devices perform identically for the core use cases: step counting, heart rate monitoring, and workout logging. Your choice should rest on ecosystem fit, design preference, and display brightness needs—not on sensor quality.
FAQ
How accurate is the step tracking on Apple Watch Ultra 3 vs Samsung Galaxy Watch Ultra?
Both watches tracked 6,500 steps with near-identical accuracy during real-world testing, with no significant drift or systematic bias. Accuracy depends more on proper wrist placement and movement patterns than on the watch model.
Can I use Samsung Galaxy Watch Ultra with an iPhone?
Samsung Galaxy Watch Ultra pairs with iPhones but loses access to Google Fit integration and some Samsung Health features. For full functionality, pairing with an Android device is recommended.
Which watch has better battery life?
Samsung Galaxy Watch Ultra typically lasts three days on a charge, while Apple Watch Ultra 3 lasts around two days with moderate use. Real-world battery performance depends on screen brightness and usage patterns.
The choice between Apple Watch Ultra 3 and Samsung Galaxy Watch Ultra ultimately comes down to your phone ecosystem. Neither watch is objectively superior for fitness tracking—both deliver accurate step counting, reliable heart rate monitoring, and comprehensive health features. The real winner is the watch that integrates with the device you already carry in your pocket. If that is an iPhone, Apple wins. If it is Android, Samsung takes the crown. For everyone else, the decision is genuinely close to call.
Edited by the All Things Geek team.
Source: Tom's Guide
