If you want better comfort
Choose Apple Watch Series 12. It scores 5.0 vs 2.4 for comfort, with a 4.3 overall score.
Apple Watch Ultra 4 Review
Bottom Line
Choose it for longer battery life, fast charging, strong GPS and deeper health tracking. Skip it if you want a smaller watch, richer native mapping, or a clearly different design.
Best for
iPhone users who want Apple’s strongest battery life, rugged hardware, precise GPS and deeper health and recovery data, especially endurance-minded buyers coming from an older Ultra.
Not for
Small-wristed users, Android owners, Ultra 3 buyers seeking a dramatic redesign, or athletes who prioritize multiweek battery life and deep native mapping.
Verdict
The Apple Watch Ultra 4 is a meaningful internal upgrade wrapped in a very familiar shell. Battery life is the clearest win, with many tests reaching roughly two to three days, while faster charging makes overnight health tracking easier to sustain. The new sensing system also improves the usefulness of heart-rate, HRV and recovery data, and GPS remains among the watch’s strongest sports features. The tradeoff is that the 49mm design is still bulky, native mapping lags dedicated sports watches, and heart-rate tracking can show delayed locks or gaps during harder efforts. Readiness is promising and easy to understand, but early software bugs and limited depth keep it from feeling fully mature. Ultra 3 owners have the weakest upgrade case; older-Ultra and health-focused buyers gain much more.
Product generations
Apple Watch Ultra- Apple Watch Ultra 2
- Apple Watch Ultra 3
- Apple Watch Ultra 4This product
Feature Scorecards
Summary
49 reviewed features-
Very positive 4.5-5.025 (51%)
-
Positive 3.5-4.415 (31%)
-
Neutral 2.5-3.42 (4%)
-
Negative 1.5-2.43 (6%)
-
Very negative below 1.54 (8%)
Pros highlights
-
Battery life is the clearest upgrade, commonly lasting around two to three days and substantially outlasting earlier Ultras in testing. It still trails dedicated endurance watches by a wide margin, and one test saw unexpectedly poor drain.
-
Value depends strongly on the buyer. New or older-Ultra owners focused on health and battery see a compelling upgrade, while Ultra 3 owners and budget-conscious shoppers often get most of the experience for less elsewhere.
-
Fast charging is a standout strength: short sessions of roughly 5–15 minutes can add enough power for sleep tracking or much of a day.
-
Readiness is one of the most welcomed additions because it turns sleep, vitals, and training data into simple, dynamic guidance. Early bugs, delayed updates, and limited historical context keep it from matching the deepest recovery systems yet.
-
Beyond fitness, the Ultra remains an excellent general smartwatch with strong Apple integration and useful additions such as faster Shazam and new audio tools.
-
Heart-rate tracking is usually excellent and often aligns closely with chest straps, but several tests found delayed locks, skipped samples, or weaker performance during fast-changing efforts. It is top-tier rather than uniformly perfect.
Cons highlights
-
Privacy is the most divisive new area. Apple's on-device protections earn praise, but Siri Recap and other always-listening features raise repeated concerns about bystander consent and ambient recording.
-
Comfort depends heavily on wrist size and preference. Some enjoy the Ultra's heft, but several small-wristed users find the 49mm body bulky, especially for sleep.
-
The large Ultra case can fit comfortably for some people, but thin or average wrists may need a tight strap for reliable heart-rate readings and can find the size excessive.
Compared With Category Average
Compared with other Smartwatches, this product is above average in LTE connectivity, onboard music storage, charging convenience, near average in recovery insights, value for money, below average in flashlight usefulness, Bluetooth connectivity, cross-platform compatibility.
Comparison summary
49 compared features-
Above average 0.4+ pts higher26 (53%)
-
Same as average within 0.3 pts12 (24%)
-
Below average 0.4+ pts lower11 (22%)
Largest category differences
| Attribute | This product | Category average | Difference |
|---|---|---|---|
| flashlight usefulness | 1.0 | 3.8 | -2.8 |
| Bluetooth connectivity | 1.0 | 3.7 | -2.7 |
| LTE connectivity | 5.0 | 2.4 | +2.6 |
| cross-platform compatibility | 1.0 | 3.5 | -2.5 |
| size options | 1.0 | 3.2 | -2.2 |
| onboard music storage | 5.0 | 2.9 | +2.1 |
| touchscreen responsiveness | 2.0 | 4.0 | -2.0 |
| comfort | 2.4 | 4.3 | -1.9 |
Consider This Instead
If you want better fit
Choose Huawei Watch Fit 4 Pro. It scores 4.8 vs 3.0 for fit, with a 4.1 overall score.
If you want better touchscreen responsiveness
Choose Apple Watch Ultra 3. It scores 4.8 vs 2.0 for touchscreen responsiveness, with a 4.0 overall score.
If you want better cross-platform compatibility
Choose Garmin Forerunner 70. It scores 4.8 vs 1.0 for cross-platform compatibility, with a 4.3 overall score.
Compared in Reviews
Products reviewers directly compared with this model, grouped into quick takeaways.
- Better: GPS workout battery The Ultra 4 falls far short of the Enduro 3 for ultra-long GPS runtime.
Ultra 3
- Older model: health sensing and battery The reviewer would choose the Ultra 4 even against a discounted Ultra 3.
- Older model: battery life The Ultra 4 raises rated smartwatch battery life from 42 to 50 hours versus the Ultra 3.
Apple Watch Series 12
- Worse: GPS accuracy The Ultra 4 produced cleaner GPS tracks than the Series 12 in the half-marathon test.
FAQ
How long does the Apple Watch Ultra 4 battery last in real use?
Most testing landed around two to three days, with several results beating Apple’s 50-hour claim. Dedicated endurance watches can still last much longer.
Is the Apple Watch Ultra 4 worth upgrading to from the Ultra 3?
The case is mixed. Battery life, denser health sensing and Readiness are meaningful gains, but the design and many core features remain very similar.
How accurate is the heart-rate tracking?
It is generally excellent and often close to chest straps, but some tests found delayed locks, skipped samples or weaker results during fast-changing efforts.
Is the new Readiness score useful?
It is easy to understand and updates during the day, which many testers liked. Early bugs, limited history and less detail than some competitors keep it from feeling fully mature.
How good are GPS and navigation?
GPS accuracy is usually excellent and benefits from multiband tracking. Native route mapping remains a weak point, so serious navigation often depends on third-party apps.
Is the Ultra 4 comfortable on smaller wrists?
Not always. The single 49mm case can feel bulky for small wrists and during sleep, and a snug fit may be important for reliable heart-rate readings.
Sample Expert Reviews We Analyzed
These are a few of the reviews included in our analysis.
Video Reviews
YouTube - The Fit File and 2 more
- Review score
- 4.3
YouTube - DC Rainmaker
- Review score
- 4.9
Article Reviews
appleinsider.com
Apple's new Health Sensing System for Apple Watch Ultra 4 means more accurate and more frequent health metric tracking. It feels like the...
- Review score
- 4.5
dcrainmaker.com
Every feature compared between the Apple Watch Series 12 & Apple Watch Ultra 4 - side-by-side in real life!
- Review score
- 4.6
cnet.com
Review: I usually say skip yearly upgrades, but the Apple Watch Ultra 4's battery-saving features and Readiness score make it the exception.
- Review score
- 3.8
pcmag.com
It dominates the spec sheet, but is the Apple Watch Ultra 4 actually worth $799 if you own last year's model? We tested both to see if the...
- Review score
- 4.5
hodinkee.com
Spending some time with this year's newest releases, and a look into what's coming up for Apple Watch.
- Review score
- 4.4
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