Compare Withings ScanWatch Nova vs Apple Watch Ultra 3

Reviewers generally found automatic activity detection useful, especially for walking, cycling, and everyday movement, though a few false detections show it is not flawless.

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 Withings ecosystem is a major strength when paired with the app and other Withings health devices, with integrations into major phone health platforms.

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 quality is mostly praised for included metal and fluoroelastomer options, but sizing and micro-adjustment complaints keep it from being universally positive.

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, with reviewers repeatedly reporting weeks of use and far less charging anxiety than standard smartwatches.

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 consistently treated as a useful core health feature, usually easy to trigger and presented clearly in the app.

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 is only lightly discussed, with one review tying workout drain to an extended phone connection rather than offering broad praise or criticism.

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

Brightness is generally adequate thanks to automatic adjustment, though direct-sun visibility and reflections can still be an issue depending on the model.

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

Build quality is repeatedly described as premium, watch-like, and appropriate for the price, especially because of the case, bezel, glass, and finishing.

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

The crown-based control system is simple and often intuitive, but one reviewer found the crown placement awkward because it presses toward the arm.

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

Call handling is basic: callers can be shown or alerted by vibration, but the watch does not replace phone-based call interaction.

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

Calorie tracking receives limited but positive evidence, with one reviewer finding estimated calories more accurate than a previous Fitbit experience.

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

Charging convenience is mixed: the long battery life reduces how often charging matters, but several reviewers disliked the proprietary or cheap-feeling charger.

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

Charging speed is acceptable rather than exceptional, usually around two hours, with one reviewer reporting a faster recharge in real use.

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 is mostly app- and subscription-driven, with health scores, VO2 max context, and wellness programs providing guidance rather than deep on-watch coaching.

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

Comfort is widely positive, helped by lighter models, silicone strap options, and all-day wearability, although the metal band can feel heavy for some.

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 is a standout, repeatedly praised for clear presentation, useful explanations, seamless syncing, and dashboard-style health tracking.

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 explicitly absent, reinforcing that this is not a full-featured smartwatch.

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

Cross-platform support is strong, with Android and iOS compatibility plus Apple Health, Google Health Connect, and Google Fit integrations mentioned.

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

Customization is practical rather than deep, covering notification permissions, menu order, workout order, OLED functions, goals, and strap choices.

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

Display quality is mixed-positive: the small OLED is sharp and legible, but its tiny monochrome format limits detail and smartwatch interaction.

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

Durability is supported by premium glass, water resistance, and real-world comments about the watch staying pristine through travel and use.

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

ECG functionality is one of the strongest health features, with repeated praise for on-demand readings, medical framing, and AFib-related capabilities.

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

Fit depends heavily on the band: some reviewers achieved an easy, secure fit, while others struggled with bracelet sizing or looseness affecting tracking.

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

Fitness tracking accuracy is good for casual use and workouts, but reviewers consistently caution that the Nova is not aimed at serious athletes.

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

GPS is a recurring weakness because the watch lacks built-in GPS, relying instead on connected phone GPS that limits phone-free workouts.

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

Health tracking accuracy is broadly praised, with reviewers comparing favorably against other devices and highlighting accurate sensor results.

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

Heart rate accuracy earns strong marks in the reviews, including direct comparisons to other devices and even a chest strap.

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

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

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 consistently premium in the evidence, with stainless steel cases, sapphire glass, ceramic bezels, and polished finishing repeatedly cited.

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

Menu navigation is simple and crown-driven, generally praised as intuitive despite the tiny display.

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

Music controls are explicitly missing, making the Nova a poor fit for users who want watch-based media control.

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

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 varies by reviewer and model, with sunlight readability praised in one review but reflections and direct sun criticized in others.

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

Pairing and sync reliability are generally strong, with setup and app syncing described as simple or seamless.

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

Recovery insights are weak or future-facing in the evidence, with one review noting recovery-related features were expected later rather than present.

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 good for daily wear and forget-it use, but connection loss and false activity detection appear as caveats.

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

Safety features center on heart-health alerts, AFib detection, ECG, and illness-related temperature signals, making this a strong health-first wearable.

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

Size options are limited on the regular Nova but improved by the smaller Brilliant model, so the evidence is mixed by variant.

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 often accurate enough for trends, but reviewers report missed split sleep, rosy or anxiety-provoking analysis, and limited sleep-stage detail.

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

Notifications are basic and polarizing: they can alert users, but the small display and lack of replies make them limited.

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

Smartwatch features are intentionally minimal, with reviewers repeatedly framing the Nova as a health-first hybrid rather than a phone-on-wrist device.

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

Software smoothness is strong around app syncing, although some activity/map issues suggest the software is not perfect.

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

Step counting is one of the more reliable daily metrics, with reviewers praising the subdial and accurate step results.

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

Style and design are the most consistent praise point, with reviewers emphasizing the luxury analog look and traditional-watch appeal.

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

Third-party app support is a clear limitation, with direct evidence that users wanting such access should look elsewhere.

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

Touchscreen responsiveness scores low because the watch has no touchscreen; all interaction is crown-based.

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

The user interface is intentionally minimalist: reviewers like its simplicity, but the small display makes notifications and richer interactions constrained.

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 mixed: reviewers admire the quality and health features but repeatedly flag the high price and subscription angle.

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 positive, with Siri described as clear and responsive alongside strong speaker and microphone hardware.

Watch face quality is positive overall, with analog hands, glow-in-the-dark indexes, subdial, and hidden display giving it a real-watch identity.

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

Water resistance is a strength, especially on the 10 ATM standard Nova, though Brilliant models are rated lower at 5 ATM.

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

Wellness insights are strong in the app, especially for health scores, trends, ECG review, dashboards, and actionable explanations.

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

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

Workout tracking variety ranges from limited basic modes in some reviews to more than 40 sports in others, so it is useful but not elite.

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