Compare Xiaomi Redmi Watch 4 vs Apple Watch Ultra 3

P1 Xiaomi Redmi Watch 4
P2 Apple Watch Ultra 3

Comparison Takeaways

Xiaomi Redmi Watch 4

Where It Has the Edge

  • cross-platform compatibility is 4.1 vs 2.1. The watch is broadly compatible with Android and iOS, and reviewers reported using or setting it up across...
  • value for money is 3.9 vs 3.3. Value is strong for shoppers prioritizing battery, display, and design, but several reviewers say rival budget watches can...
  • comfort is 4.1 vs 3.5. The large watch is still light enough for all-day wear and sleep tracking, though its size can affect...
  • coaching features is 4.0 vs 3.5. Coaching features are better than expected for the price, with running workouts, warm-ups, and training details, but they...

Apple Watch Ultra 3

Where It Has the Edge

  • app ecosystem is 4.9 vs 1.5. The app ecosystem is a major strength, with reviewers pointing to the huge Apple Watch app store and...
  • contactless payments is 4.6 vs 1.4. Contactless payments are supported through Apple Pay and Wallet, reinforcing the Ultra 3’s day-to-day smartwatch usefulness.
  • LTE connectivity is 4.1 vs 1.0. Cellular and 5G support is useful, especially for iPhone-free use, though some reviewers saw limited real-world speed gains...
  • onboard music storage is 4.0 vs 1.0. Onboard storage is confirmed at 64GB, but reviewers did not deeply evaluate local media storage as a standalone...
Average score
Product 1: Xiaomi Redmi Watch 4
3.4
Product 2: Apple Watch Ultra 3
4.2
activity auto-detection
Product 1: Xiaomi Redmi Watch 4
4.0

Workout auto-detection appears in several reviews and covers common modes, so it is a useful convenience rather than a standout training feature.

Product 2: Apple Watch Ultra 3
4.2

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.

app ecosystem
Product 1: Xiaomi Redmi Watch 4
1.5

The watch handles built-in basics, but reviewers repeatedly note that there is no real app store or downloadable app ecosystem.

Product 2: Apple Watch Ultra 3
4.9

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
Product 1: Xiaomi Redmi Watch 4
3.3

Strap feedback is split: quick-release hardware is welcomed, but several reviewers criticize the clasp, feel, or friction of the stock band.

Product 2: Apple Watch Ultra 3
4.0

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

battery life
Product 1: Xiaomi Redmi Watch 4
4.5

Battery life is one of the clearest strengths, with reviewers commonly getting a week or more and quoting up to two or three weeks depending on settings.

Product 2: Apple Watch Ultra 3
4.3

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
Product 1: Xiaomi Redmi Watch 4
3.3

Blood oxygen tracking is present and can run continuously, but reviewers disagree on whether the readings are dependable enough for deeper health insight.

Product 2: Apple Watch Ultra 3
4.1

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 connectivity
Product 1: Xiaomi Redmi Watch 4
4.0

Bluetooth is adequate for pairing and calls, with reviewers treating it as a basic but functional connection layer.

Product 2: Apple Watch Ultra 3
4.0

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

brightness
Product 1: Xiaomi Redmi Watch 4
4.2

Brightness is consistently praised, with the 600-nit AMOLED panel considered strong for the price and usable in bright conditions.

Product 2: Apple Watch Ultra 3
4.7

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

build quality
Product 1: Xiaomi Redmi Watch 4
4.3

Build quality is a major upgrade over prior Redmi watches thanks to the aluminum/metal frame and generally sturdy feel.

Product 2: Apple Watch Ultra 3
4.7

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

button controls
Product 1: Xiaomi Redmi Watch 4
3.6

The rotating crown is useful for navigation, though some reviewers dislike its lack of tactility or note accidental presses.

Product 2: Apple Watch Ultra 3
4.5

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

call handling
Product 1: Xiaomi Redmi Watch 4
4.1

Bluetooth calling is consistently treated as a useful smartwatch feature, with positive comments about making, receiving, or hearing calls from the wrist.

Product 2: Apple Watch Ultra 3
4.6

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

calorie tracking usefulness
Product 1: Xiaomi Redmi Watch 4
2.5

Calorie tracking is only supported as a rough estimate, not a reliable training metric.

Product 2: Apple Watch Ultra 3
3.8

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

charging convenience
Product 1: Xiaomi Redmi Watch 4
2.0

Charging convenience is limited because reviewers identify the cable as proprietary, making it less travel-friendly than universal charging.

Product 2: Apple Watch Ultra 3
4.5

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

charging speed
Product 1: Xiaomi Redmi Watch 4
2.0

Charging speed is not a strength; one review specifically notes there is no fast charging and a full charge takes well over an hour.

Product 2: Apple Watch Ultra 3
4.4

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
Product 1: Xiaomi Redmi Watch 4
4.0

Coaching features are better than expected for the price, with running workouts, warm-ups, and training details, but they remain basic.

Product 2: Apple Watch Ultra 3
3.5

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

comfort
Product 1: Xiaomi Redmi Watch 4
4.1

The large watch is still light enough for all-day wear and sleep tracking, though its size can affect smaller wrists.

Product 2: Apple Watch Ultra 3
3.5

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

companion app quality
Product 1: Xiaomi Redmi Watch 4
3.4

Mi Fitness is functional and covers settings and stats, but reviewers describe it as plain, dated, or merely adequate rather than polished.

Product 2: Apple Watch Ultra 3
3.9

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
Product 1: Xiaomi Redmi Watch 4
1.4

Contactless payment support is a repeated limitation outside China, with several reviewers saying payment/NFC functionality is missing or region-bound.

Product 2: Apple Watch Ultra 3
4.6

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

cross-platform compatibility
Product 1: Xiaomi Redmi Watch 4
4.1

The watch is broadly compatible with Android and iOS, and reviewers reported using or setting it up across both platforms.

Product 2: Apple Watch Ultra 3
2.1

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

customization options
Product 1: Xiaomi Redmi Watch 4
3.8

Customization is decent for watch faces, widgets, shortcuts, straps, and personal photos, though some reviewers want deeper software customization.

Product 2: Apple Watch Ultra 3
4.5

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

display quality
Product 1: Xiaomi Redmi Watch 4
4.1

The large AMOLED display is one of the strongest features, though one reviewer found colors slightly washed out and bezels can be noticeable.

Product 2: Apple Watch Ultra 3
4.5

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

durability
Product 1: Xiaomi Redmi Watch 4
3.7

Durability looks good from the aluminum body and water resistance, but sharp-edge scratch concerns appear in one review.

Product 2: Apple Watch Ultra 3
4.6

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

ECG functionality
Product 1: Xiaomi Redmi Watch 4
No score yet
Product 2: Apple Watch Ultra 3
4.2

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

fit
Product 1: Xiaomi Redmi Watch 4
2.9

Fit is context-dependent because the large case helps readability but may feel oversized on smaller wrists.

Product 2: Apple Watch Ultra 3
2.9

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

fitness tracking accuracy
Product 1: Xiaomi Redmi Watch 4
3.2

Fitness accuracy is mixed: some reviewers praise it for casual use, while others find it too rough for serious training.

Product 2: Apple Watch Ultra 3
4.5

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

GPS accuracy
Product 1: Xiaomi Redmi Watch 4
3.4

GPS feedback ranges from stellar to merely okay, with multiple reviewers saying competitors or phones can track more accurately.

Product 2: Apple Watch Ultra 3
4.6

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

health tracking accuracy
Product 1: Xiaomi Redmi Watch 4
2.6

Overall health accuracy is mixed to weak because richer health metrics are undermined by questionable heart-rate and blood-oxygen data.

Product 2: Apple Watch Ultra 3
4.4

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

heart rate accuracy
Product 1: Xiaomi Redmi Watch 4
2.9

Heart-rate accuracy is the most disputed health metric, with several reviewers reporting poor or iffy readings and one positive reviewer seeing good reference data.

Product 2: Apple Watch Ultra 3
3.9

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

LTE connectivity
Product 1: Xiaomi Redmi Watch 4
1.0

LTE or cellular independence is absent, so connected features like SOS and assistant use still depend on a nearby phone.

Product 2: Apple Watch Ultra 3
4.1

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
Product 1: Xiaomi Redmi Watch 4
No score yet
Product 2: Apple Watch Ultra 3
3.2

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
Product 1: Xiaomi Redmi Watch 4
4.1

Materials quality is widely praised for the aluminum or metal frame, which makes the watch feel less budget than older plastic models.

Product 2: Apple Watch Ultra 3
4.6

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

menu navigation
Product 1: Xiaomi Redmi Watch 4
4.1

Menu navigation is generally easy thanks to swipes, widgets, and the crown, with the large screen helping readability.

Product 2: Apple Watch Ultra 3
4.0

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

music controls
Product 1: Xiaomi Redmi Watch 4
3.9

Music controls are useful for phone playback, but reviewers do not describe true onboard music playback as a strength.

Product 2: Apple Watch Ultra 3
4.1

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

onboard music storage
Product 1: Xiaomi Redmi Watch 4
1.0

Onboard music storage is effectively absent in the reviewed evidence; one review lists a music player among missing features.

Product 2: Apple Watch Ultra 3
4.0

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

operating system experience
Product 1: Xiaomi Redmi Watch 4
3.2

HyperOS is smooth but basic, and one Chinese-version review disputes whether it behaves like a real HyperOS smartwatch.

Product 2: Apple Watch Ultra 3
4.7

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
Product 1: Xiaomi Redmi Watch 4
4.2

Outdoor visibility is strong, with repeated praise for the bright screen being readable outside or in sunlight.

Product 2: Apple Watch Ultra 3
4.6

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

pairing reliability
Product 1: Xiaomi Redmi Watch 4
4.0

Pairing and syncing appear generally reliable in the main written review, though this is not heavily discussed across sources.

Product 2: Apple Watch Ultra 3
4.9

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

recovery insights
Product 1: Xiaomi Redmi Watch 4
2.3

Recovery insights exist, but reviewers question their usefulness because they rely on imperfect exercise and heart-rate data.

Product 2: Apple Watch Ultra 3
3.2

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

reliability
Product 1: Xiaomi Redmi Watch 4
3.1

Reliability is mixed: one reviewer reports a recurring DND sync bug, while another praises good connection.

Product 2: Apple Watch Ultra 3
4.2

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

safety features
Product 1: Xiaomi Redmi Watch 4
3.6

Safety features center on emergency SOS through the crown, but reviewers note the phone must be nearby.

Product 2: Apple Watch Ultra 3
4.6

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

size options
Product 1: Xiaomi Redmi Watch 4
No score yet
Product 2: Apple Watch Ultra 3
2.8

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 accuracy
Product 1: Xiaomi Redmi Watch 4
3.7

Sleep tracking is often good for bedtime and duration, but more advanced sleep or heart-rate details are less trustworthy.

Product 2: Apple Watch Ultra 3
4.2

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

smartphone notifications
Product 1: Xiaomi Redmi Watch 4
3.3

Notifications are useful and readable on the large screen, but reply support, emoji display, or notification limits are recurring caveats.

Product 2: Apple Watch Ultra 3
4.0

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

smartwatch features
Product 1: Xiaomi Redmi Watch 4
3.0

Smartwatch features cover basics like calls, notifications, weather, calendars, and controls, but reviewers repeatedly frame them as basic.

Product 2: Apple Watch Ultra 3
4.6

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

software smoothness
Product 1: Xiaomi Redmi Watch 4
4.3

Software smoothness is a standout; reviewers repeatedly call the interface smooth, snappy, fluid, or minimally laggy.

Product 2: Apple Watch Ultra 3
4.6

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

step counting accuracy
Product 1: Xiaomi Redmi Watch 4
3.5

Step tracking is good enough for casual use, with reviewers finding it generally in line or not wildly off.

Product 2: Apple Watch Ultra 3
3.2

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

stress tracking
Product 1: Xiaomi Redmi Watch 4
3.5

Stress tracking is included and can run with other wellness metrics, though reviews provide limited proof of its accuracy.

Product 2: Apple Watch Ultra 3
No score yet
style and design
Product 1: Xiaomi Redmi Watch 4
4.2

Reviewers generally like the design, especially the big square look and more premium metal frame at a budget price.

Product 2: Apple Watch Ultra 3
4.2

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

third-party app support
Product 1: Xiaomi Redmi Watch 4
2.8

Third-party support is mixed: there is no watch app store, but Mi Fitness can sync with services like Strava and Apple Health.

Product 2: Apple Watch Ultra 3
4.6

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

touchscreen responsiveness
Product 1: Xiaomi Redmi Watch 4
4.3

Touch and interaction responsiveness are positive where discussed, with reviewers calling the display responsive and the interface snappy.

Product 2: Apple Watch Ultra 3
4.8

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

user interface
Product 1: Xiaomi Redmi Watch 4
4.1

The UI is generally clear, colorful, and optimized for the large square screen.

Product 2: Apple Watch Ultra 3
4.3

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
Product 1: Xiaomi Redmi Watch 4
3.9

Value is strong for shoppers prioritizing battery, display, and design, but several reviewers say rival budget watches can offer smarter features or better tracking.

Product 2: Apple Watch Ultra 3
3.3

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
Product 1: Xiaomi Redmi Watch 4
2.6

Voice assistant support is inconsistent: Alexa or Mi AI appears in some versions, while other reviewers note no assistant or China-only limitations.

Product 2: Apple Watch Ultra 3
4.3

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

watch face quality
Product 1: Xiaomi Redmi Watch 4
3.8

Watch faces are polarizing, ranging from limited and boring to a large free selection depending on version, region, and reviewer expectations.

Product 2: Apple Watch Ultra 3
4.4

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

water resistance
Product 1: Xiaomi Redmi Watch 4
4.5

Water resistance is consistently strong for the category, with 5ATM/50m claims and real swim or shower use noted.

Product 2: Apple Watch Ultra 3
4.6

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

wellness insights
Product 1: Xiaomi Redmi Watch 4
3.1

Wellness insights are broad for the price, including sleep animals, Vitality, training load, and scores, but accuracy limits reduce trust.

Product 2: Apple Watch Ultra 3
4.2

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

Wi-Fi connectivity
Product 1: Xiaomi Redmi Watch 4
No score yet
Product 2: Apple Watch Ultra 3
3.7

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
Product 1: Xiaomi Redmi Watch 4
4.5

Workout variety is excellent for the price, with reviewers repeatedly citing more than 150 sports or workout modes.

Product 2: Apple Watch Ultra 3
4.5

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