Compare Amazfit Cheetah 2 Ultra vs Samsung Galaxy Watch Ultra (2025)

Auto-detection is useful because detected walks and activities can contribute to training load and improve recovery estimates.

Auto-detection works very well for walking and running, but one reviewer found it less reliable for cycling and strength training.

The antioxidant index is consistently weak, with several reviewers calling it low-value, inaccurate, gimmicky, or only marginally responsive.

The app ecosystem is split: one reviewer calls Zepp credible, while another says the wider ecosystem is a weak point.

The app ecosystem is strong, with reviewers citing many apps and plenty of smartwatch functionality.

Band quality is mixed: some reviewers like the included bands, while another calls the strap the build’s weakest part.

Band quality is mixed to positive, with easy swaps and a robust strap system offset by dirt buildup and a hit-or-miss release mechanism.

Battery life is one of the strongest areas, with multiple reviewers praising long GPS and everyday endurance despite one short-of-claim test.

Battery life is a strength relative to other Galaxy Watches, but real-world results vary widely with always-on display, GPS, and travel use.

Blood oxygen tracking drew a clear caveat, with one reviewer repeatedly seeing lower SPO2 results than expected from other sensors.

Brightness is usually praised as top tier, though one reviewer found Apple and Garmin screens punchier outdoors.

Brightness is one of the clearest strengths, with reviewers repeatedly noting bright output and easy readability.

Build quality is consistently praised, with reviewers describing a premium, robust, well-built watch.

Build quality is a major strength thanks to the rugged titanium case, robust design, and adventure-ready construction.

Button controls are polarized: reviewers like the programmable/quick button, but one long-term reviewer had repeated accidental presses and wanted better workout shortcuts.

Call handling works well for one reviewer, with loudness comparable to an Apple Watch in ordinary environments.

Charging convenience is mostly positive, with secure magnetic charging and useful top-up behavior, though one magnet felt only decent.

Charging convenience is hurt by Samsung omitting the wall charger, which one reviewer called stingy.

Charging speed is serviceable but not impressive compared with faster rivals.

Coaching and training analysis are well regarded, especially for runners, though reviewers still place Garmin ahead in depth.

Coaching features are a standout, especially Running Coach, which reviewers found useful, personalized, or exceptionally effective.

Comfort is generally good despite the large case, helped by low weight and comfortable strap options.

Comfort varies by reviewer: some found it comfortable, including for sleep, while others felt the weight and bulk.

The companion app is mixed: credible and workable, but route creation and map downloads can feel hidden or clunky.

Companion app quality is mixed because Samsung still splits settings and health data across separate apps.

Contactless payment works quickly after setup, but enrollment and PIN friction make the implementation less convenient.

Cross-platform support is uneven because Android replies are supported while iOS notification replies are limited.

Cross-platform compatibility is limited: reviewers note Android support but no current iPhone compatibility.

Customization has limitations, especially on fixed elevation overview metrics that cannot yet be configured.

Customization is strong for widgets, dashboards, watch faces, and tiles, but workout data-screen customization drew a complaint.

Display quality is widely praised for size, responsiveness, AMOLED sharpness, and improved bezel proportions.

Display quality is consistently praised as vibrant, large, detailed, scratch-resistant, and excellent overall.

Durability impressions are strong, with tough off-road suitability and robust high-quality construction highlighted.

Durability is excellent across reviews, from chassis feel to military-standard claims and real-world wear with little damage.

ECG is a clear missing health feature; one reviewer called its absence one of the few serious criticisms.

ECG is treated positively as part of Samsung Health Monitor’s useful health-tool set rather than as a deeply tested medical feature.

Fit is acceptable for larger watches but slightly thicker on wrist, though one reviewer did not find the thickness notable.

Fit is context-dependent: one reviewer liked the big watch on their wrist, while another found it too large.

General activity performance was positive across runs, swims, and gym workouts in one review.

Fitness tracking is broadly positive for running and general activity, though scientific testing framed performance as good enough rather than best-in-class.

The flashlight is strongly praised as useful, bright, and convenient, especially for nighttime runs and everyday situations.

GPS accuracy is generally strong and often close to top competitors, though some tests judged it competitive rather than exceptional in harder conditions.

GPS accuracy is praised by several mainstream reviewers, but scientific testing found visible deviations and placed it behind stronger sports watches.

Health-tracking accuracy is mixed: reviewers praised some running-related readings, but questioned HRV, blood oxygen, antioxidant-style metrics, and scientific testing placed Samsung below top-tier rivals.

Heart-rate evidence is mostly positive, with excellent road, trail, gym, and cycling results, though reviewers noted occasional interval or anomaly problems.

Heart-rate accuracy is generally good for running and daily fitness, though scientific testing still found better wrist options and exercise-dependent limits.

Hill and elevation tracking is praised as genuinely useful for reading climbs, descents, and route difficulty.

LTE is a clear weakness because reviewers note there is no cellular option or independent internet connection.

LTE is a meaningful advantage for users who want to run or stay reachable without carrying a phone.

Mapping and navigation are powerful and fast overall, but visual rerouting and return routing remain important weaknesses.

Mapping and navigation benefit from larger storage for offline maps and route-related use, especially for outdoor users.

Materials quality is a major strength thanks to titanium and sapphire construction that reviewers repeatedly call premium.

Materials quality is excellent, with praise for titanium, ruggedness, and corrosion-resistant construction.

Menu navigation benefits from responsive menus, workout screens, and map display performance.

Menu navigation is mixed: the digital bezel and haptics help, but reviewers miss a rotating bezel/crown and find usability reduced.

Music controls are limited by the lack of streaming-service support.

Onboard music is usable for manually loaded files, but streaming-service absence is a repeated limitation.

Onboard music and storage are valuable for Spotify, podcasts, media, and offline use, especially now that storage is doubled.

Zepp OS feels smoother and more mature than before, but still trails Apple and Garmin polish in some reviewer opinions.

The operating system experience is improved by One UI 8, with more functional UI elements and praised new software features.

Outdoor visibility is generally good, with strong readability praise, but one review found rivals punchier in bright sun.

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

Pairing was quick and painless in the unboxing evidence.

Pairing reliability is excellent in the Notebookcheck test, where the watch was recognized and set up without issues.

Recovery guidance was described as broadly sensible after testing, with no major complaint about the recovery-time behavior.

Recovery-style guidance is a weak spot in one long-term review, where the energy score felt redundant and unhelpful.

Reliability is mixed: endurance and GPS are taken seriously, but automatic rerouting was criticized for not working reliably.

Reliability is mostly good, but Notebookcheck reported brief display interruptions during always-on display use.

Running power support is treated positively as part of the advanced running metrics available without extra sensors.

Safety usefulness is supported mainly by the bright flashlight and SOS-style illumination for night trails.

Safety features are helped by LTE, which one reviewer valued for safer phone-free running.

Score tracking is useful through BioCharge-style internal battery scoring, though the evidence centers on wellness scores rather than sport scoring.

Size is a tradeoff: the larger case improves screen experience, but very slim wrists may not be ideal.

Size options are limited by the single large case, and multiple reviewers describe the Ultra as very big.

Sleep tracking drew a poor personal accuracy assessment from one reviewer, who said watches generally reported good sleep despite feeling bad.

Sleep tracking earns mixed marks: reviewers liked the score and some stage consistency, but noted low awake detection and second-tier sleep-stage performance.

Notifications are usable, but iOS reply limitations make the experience less complete.

Notification handling is positive, with one reviewer noting detailed, useful notifications from the watch.

Smartwatch features are considered broad and useful, with packed hardware and everyday tools, but not always best-in-class.

Core smartwatch features are strong, but some reviews temper praise by noting the 2025 model adds few meaningful upgrades.

Software smoothness is strong where maps and navigation screens load quickly.

Software smoothness is strong in direct testing, with smooth operation and quick app launches.

Step counting is strong during normal arm-swinging walks, with a caveat that carts or strollers reduce accuracy.

Stress-related scoring is viewed positively through Hybrid Charge, which combines physical data with psychological stress inputs for more personalized feedback.

Style and design are a major strength, with repeated praise for its premium, streamlined, elegant look.

Style is subjective: one reviewer loved the stylish look, while another disliked the rugged, masculine aesthetic.

Third-party app support is mixed, with useful athlete integrations offset by a storefront lacking major apps.

Third-party app support benefits from extra storage and useful fitness/media apps, giving users more room for services beyond Samsung’s own tools.

Touch response is praised on the display, but one reviewer disliked the double-tap unlock behavior during activity.

The on-watch interface makes good use of the larger screen and feels natural in the tested UI.

The user interface is functional and approachable, though at least one reviewer found parts of the visual design odd.

Value is divided: reviewers praise the Garmin undercut and premium feature set, but some question the high Amazfit price and overlap with cheaper models.

Value for money is the most contested attribute: reviewers like the watch itself but often question the 2025 refresh and launch price.

Voice assistant feedback is positive overall: one reviewer found it works well enough, while another called it fast and responsive.

Gemini makes the voice assistant experience notably useful and convenient, especially because the watch screen is small.

Watch faces are a major strength, with reviewers praising Samsung’s selection, visual quality, and customization.

Water resistance is acceptable for swimming but limited by the lack of diving suitability.

Water resistance is treated positively for pool, rain, snow, and diving-oriented use.

Wellness insights are praised through BioCharge and Hybrid Charge-style feedback that personalizes readiness and energy signals.

Wellness insights are useful when they explain metrics or provide coaching, though some newer metrics remain questionable.

Workout variety is a strength, with reviewers emphasizing extensive training modes and broad activity coverage.

Workout variety is a strength, with reviewers praising broad activity support, multisport-style capabilities, and Samsung’s wide exercise list.