Compare Samsung Galaxy Watch Ultra (2025) vs Apple Watch Ultra 3

Workout auto-detection is broadly useful, with reviewers citing automatic workout detection and reliable walk detection, though manual starts remain better for some activities.

Reviewers describe useful automatic workout or track-detection support, mostly as part of the broader Apple workout feature set rather than as a heavily tested headline feature.

The app ecosystem is a strength: reviewers mention many available apps, Google Play access, and expanded usefulness from the extra storage.

The app ecosystem is a major strength, with reviewers pointing to the huge Apple Watch app store and strong support from fitness and everyday apps.

Band feedback is mostly positive for comfort, stability, and easy removal, though one reviewer noted dirt collecting in the strap holes.

Band feedback is mixed: some reviewers liked Trail Loop stability or comfort, while one found it could work loose during runs.

Battery life is one of the clearest strengths, often described as the best in Samsung’s lineup, though heavy GPS or always-on use can reduce it.

Battery life is consistently better than standard Apple Watches, often reaching two to three days, though reviewers still note it trails dedicated sports watches.

Blood oxygen tracking is present across the health sensor set, but one long-term reviewer found SpO2 readings routinely low.

Blood oxygen tracking is treated as part of Apple’s broad health suite, with reviewers noting SpO2 or Blood Oxygen availability rather than deeply testing accuracy.

Bluetooth support is present, including Bluetooth 5.3 mentions, but external sensor connections were criticized or described as unavailable.

Bluetooth support is present and cited through Bluetooth 5.3, though reviewers did not spend much time testing Bluetooth reliability in depth.

Brightness earns strong praise, with reviewers citing high nits, bright AMOLED output, and easy readability.

Brightness is a clear strength, with multiple reviewers praising the 3,000-nit display, wide-angle viewing, and real-world readability.

Build quality is consistently praised through the rugged titanium case, durable chassis, and robust construction.

Build quality is praised as rugged, durable, refined, and premium, with titanium and sapphire contributing to confidence in daily and outdoor use.

Button controls are mixed: reviewers like the Quick/action button and programmable shortcuts, but one long-term reviewer disliked accidental presses and limited workout button behavior.

Button controls are well liked, especially the Action button, wrist gestures, and quick workout or utility shortcuts.

Call handling is supported through Bluetooth calling, speaker/mic use, and smartwatch features for calls and texts.

Call handling receives positive notes, with reviewers saying the speakers and microphones keep calls clear for a smartwatch.

Calorie tracking is included as part of the activity metrics, but the evidence is limited to feature availability rather than deep accuracy testing.

Calorie tracking is mentioned as part of Activity Rings and daily movement tracking, but reviewers give little direct analysis of its precision.

Charging is wireless and reasonably convenient, but one reviewer criticized the missing wall charging block.

Charging convenience improves the ownership experience because quick top-ups can cover sleep tracking or reduce the need for strict daily charging.

Charging speed gets limited but positive evidence, with one review reporting a full charge in about 95 minutes.

Charging speed is widely praised as faster and practical, commonly cited around 80% in about 45 minutes or meaningful top-ups in 15 minutes.

Coaching features are a real addition, especially Running Coach, with reviewers describing personalized plans and guidance.

Workout Buddy and coaching features are useful but uneven, with praise for encouragement offset by complaints about limited requirements or wonky feedback.

Comfort depends on wrist and expectations: some reviewers found it comfortable, while others felt the weight or bulk.

Comfort depends heavily on wrist size and band choice: some found 24/7 wear manageable, while others still considered the Ultra 3 bulky.

The companion app setup is useful but split, with health and smartwatch settings divided between Samsung Health and Galaxy Wearable.

The companion app experience is useful but not flawless, with Health, Fitness, and Watch app integration praised while post-run data organization can feel split.

Contactless payments are supported through Samsung Wallet or Samsung Pay shortcuts.

Contactless payments are supported through Apple Pay and Wallet, reinforcing the Ultra 3’s day-to-day smartwatch usefulness.

Cross-platform compatibility is limited: reviews say it works with Android but not iPhone, with the best experience tied to Samsung phones.

Cross-platform compatibility is a weakness: reviewers repeatedly emphasize that the Ultra 3 is effectively for iPhone users only.

Customization is strong across programmable buttons, widgets, tiles, colors, and watch-face data.

Customization is strong, from workout profiles and data screens to third-party apps, routes, and Action button behavior.

Display quality is a major strength, with repeated praise for the large, vibrant AMOLED display.

Display quality is one of the strongest points, with reviewers repeatedly praising the larger LTPO OLED panel, clarity, and premium screen experience.

Durability is a standout, backed by titanium construction, MIL-STD claims, scratch protection, and reviewer reports of little damage.

Durability is a strength, with reviewers citing titanium, sapphire, water ratings, and real-world resistance to visible damage.

ECG functionality is widely listed as part of the health feature set, though one review notes Samsung-phone pairing requirements for ECG and blood pressure.

ECG support is repeatedly listed as part of Apple’s advanced health feature set, though not deeply performance-tested in these reviews.

Fit is polarizing: it can fit some larger wrists well, but reviewers also note the single 47mm size and large wrist footprint.

Fit is a recurring caveat because the large 49mm body can loosen, press against smaller wrists, or affect sensor contact.

Fitness tracking accuracy is generally good for everyday and running use, though scientific testing places it below the top alternatives.

Fitness tracking accuracy is broadly positive, especially for sports tracking and metrics, though not all reviewers found every sensor perfect.

GPS accuracy is good in several reviewer tests and supports dual-frequency GPS, but scientific testing found some route deviation.

GPS accuracy is one of the strongest consensus wins, with reviewers repeatedly calling tracks solid, precise, or among the best available.

Health tracking is feature-rich but mixed in accuracy, with strong sensor coverage offset by questionable antioxidant, HRV, and some sleep-stage findings.

Health tracking is considered comprehensive and strong, combining Vitals, ECG, SpO2, hypertension alerts, sleep, and activity data.

Heart-rate accuracy is strongest in running evidence, with one reviewer matching a Polar strap closely, while scientific testing calls it good rather than elite.

Heart-rate accuracy is mostly praised, but evidence is mixed: several tests matched chest straps closely while others reported errors during runs.

LTE is a consistent advantage because it is standard or broadly available, though one reviewer notes carrier setup can cost extra.

Cellular and 5G support is useful, especially for iPhone-free use, though some reviewers saw limited real-world speed gains or carrier limits.

Navigation support is useful through offline maps, Google Maps routing, and GPS widgets, but one reviewer notes no built-in maps on-watch.

Mapping and navigation are a major split: third-party apps and urban directions help, but native workout mapping and route following remain weak.

Materials quality is strong, centered on titanium, sapphire/robust design references, and corrosion-resistant claims.

Materials quality is highly regarded, with reviewers repeatedly citing titanium, sapphire crystal, recycled titanium, and premium construction.

Menu navigation is mostly straightforward through swipes, app drawers, digital bezel haptics, and simple operation.

Menu navigation in the Workout app is described as improved and better organized, though this was not a major review focus.

Music features are useful for downloaded Spotify, streaming, media tiles, and larger storage for music.

Music features are useful, from Apple Music workout playlists to playback controls and iPhone-free listening, though playlist taste can be inconsistent.

Onboard storage is a clear 2025 upgrade, repeatedly described as 64GB and useful for music, apps, and offline maps.

Onboard storage is confirmed at 64GB, but reviewers did not deeply evaluate local media storage as a standalone feature.

The operating system experience benefits from One UI 8/Wear OS updates, Gemini, Now Bar, and refreshed interface features.

The operating system experience is a major strength, with watchOS 26 and Apple’s software polish helping the Ultra 3 feel smooth and integrated.

Outdoor visibility is excellent, with multiple reviewers saying the bright display remains readable in sunlight.

Outdoor visibility is consistently praised, with reviewers reporting strong readability in bright sunlight, shade, and off-angle situations.

Pairing and setup reliability are positive where tested, with instant recognition and quick setup noted.

Pairing reliability and ecosystem integration are described as excellent through the Ultra 3’s close, seamless connection with the iPhone.

Recovery-style insights are mixed: vascular load interests some reviewers, while HRV and related metrics draw skepticism.

Recovery insights are useful but shallow compared with dedicated sports watches, with training load and health insights noted as limited or basic.

Reliability is mostly acceptable but not flawless, with one review noting brief display interruptions and another calling performance not horrible rather than perfect.

Reliability is generally positive for satellite, calls, software stability, and daily use, though sensor reliability is not perfect in all contexts.

Safety features include fall detection, emergency siren references, sleep apnea alerts, and related health/safety setup options.

Safety features are a headline strength, especially satellite SOS, satellite messaging, fall/crash detection, siren, and off-grid location support.

Size options are limited by the single large 47mm format, though the band can fit a range of wrists and the screen size appeals to some users.

Size options are limited, since the Ultra 3 is a large 49mm watch that can be too much for smaller wrists or slimmer-watch shoppers.

Sleep tracking is useful and improving, but reviewers disagree on sleep stages and awake-time accuracy.

Sleep tracking is mostly regarded as accurate and useful, with Sleep Score adding clarity, though occasional quirks or fit issues remain.

Smartphone notifications are well supported, with reviewers noting detailed notification views and suggested replies.

Smartphone notifications are part of normal daily use and battery testing, but reviewers did not emphasize notification handling as a differentiator.

Smartwatch features are broad, including LTE, calls, texts, Gemini, Now Bar, storage, and Samsung’s full watch software stack.

Smartwatch features are a core strength, with reviewers calling it a full-featured iPhone smartwatch rather than only a sports watch.

Software smoothness is generally good, with smooth app launches and more functional One UI behavior, despite occasional reliability caveats.

Software smoothness is praised, with reviewers calling taps, swipes, animations, and the overall experience snappy, responsive, and stable.

Step counting is positive in basic walking tests, but one reviewer notes accuracy drops when arms are not swinging.

Step tracking is present through Activity tracking, but review evidence only confirms step tracking rather than demonstrating strong accuracy testing.

Stress tracking is included in Samsung’s health sensor set, though the reviews provide feature evidence more than accuracy testing.

Style is divisive: some reviewers like the rugged, colorful, stylish look, while others find it bulky or not pretty.

Style and design are generally praised as rugged, sophisticated, premium, and increasingly mainstream, though bulk remains polarizing.

Third-party app support is solid through Google Play, fitness apps such as Strava and Map My Run, and a growing Wear OS app selection.

Third-party app support is a standout advantage, especially for Strava, Runna, WorkOutDoors, AllTrails, Spotify, and other Apple Watch apps.

Touchscreen responsiveness and gesture operation are described as intentional and straightforward in the long-term review evidence.

Touchscreen responsiveness receives very strong praise in the Runner’s World review, where the screen is called brilliantly responsive.

The user interface is improved and functional, though some reviewers dislike parts of the visual layout.

The user interface is generally smooth and modern, with Liquid Glass and revised workout navigation praised, though minor glitches appear in one review.

Value for money is the main weak point because reviewers repeatedly question the high price and minimal 2025 hardware changes.

Value is mixed: reviewers respect the capability but repeatedly mention the high price and limited need to upgrade from recent Ultra models.

Voice assistant quality is a strength with Gemini, which reviewers describe as convenient, useful, and directly available on the wrist.

Voice assistant quality is positive, with Siri described as clear and responsive alongside strong speaker and microphone hardware.

Watch faces are a strength, with reviewers praising quantity, customization, and Samsung’s polished face designs.

Watch faces are a meaningful Ultra advantage, especially Modular Ultra and Waypoint, though one reviewer reported Waypoint glitches.

Water resistance is a strong feature, with reviews citing 5ATM/10ATM ratings, IP68 claims, and pool/rain/snow use.

Water resistance is a strong point, with reviewers noting 100m resistance, 40m diving support, and snorkeling or swim readiness.

Wellness insights are useful but uneven: sleep coaching and vascular load get interest, while energy score and antioxidant index receive skepticism.

Wellness insights are useful and increasingly broad, with Vitals, Sleep Score, hypertension alerts, sleep apnea, and sleep-stage context highlighted.

Wi-Fi support is present across connectivity mentions, including LTE/Wi-Fi model references.

Wi-Fi is mostly discussed in relation to off-grid satellite fallback, so evidence supports connectivity context more than detailed Wi-Fi performance.

Workout variety is strong, with reviewers citing many tracked activities, multisport/triathlon capability, and broad exercise lists.

Workout tracking variety is broad, covering many activity modes, running profiles, cycling, swimming, diving, and outdoor activities.