Apple Ultra 3 vs Galaxy Watch Ultra 2: the deciding factor is software you cannot spec-sheet

A ZDNET reviewer spent three weeks wearing an Apple Watch Ultra 3 and a Samsung Galaxy Watch Ultra 2 at the same time, across trail running, biking, walking, hiking, rowing and golf, and headlined the result as apps making all the difference ^[1][2][6]. That framing matters more than the verdict, because it moves the buying decision off the spec sheet, where these two devices have converged, and onto software, where comparisons are harder to audit.

Start with the convergence. Both watches have large displays, are built for larger wrists, and use rugged designs aimed at the outdoors ^[3]. Both support cellular, so both work without a phone nearby ^[4]. Both carry safety features for remote areas, including loud sirens to draw attention in an emergency ^[5]. On every hardware attribute the review lists, the two are functionally interchangeable ^[21]. Even the finishes line up: Titanium Silver and Titanium Gray against natural titanium and black ^[8]. The Galaxy Watch Ultra 2 is $699 in 47mm and the Apple Watch Ultra 3 is $799 in 49mm, a $100 gap for 2mm of case ^[7][18][20].

Now the part worth reading carefully. The differences the review actually enumerates are not third-party apps at all. They are first-party platform features on the Samsung side: a daily energy score, sleep score, five nightly vital statistics, daily cardio load, heart health scores and a custom running coach inside Samsung Health ^[9], trail-running guidance with hydration alerts and off-path warnings borrowed from expensive GPS sports watches ^[11], and body composition measurement ^[12]. ZDNET credits Google with setting the bar here through its AI-enabled Google Health Coach, with Samsung following ^[10]. The reviewer also lists Gemini integration as a reason to choose Samsung, having never fully adopted Bixby across years of using the company's devices ^[16].

The single hardest capability difference is blood pressure. The Galaxy Watch Ultra 2 takes readings any time it is worn, calibrated against a cuff every 30 days ^[13]. Apple and Google offer hypertension notifications but not readings, according to ZDNET ^[14]. That calibration cadence is roughly a dozen cuff sessions per user per year ^[19], which is a support cost, not a feature, for anyone equipping a team. ZDNET notes that elevated data should be taken to a doctor ^[15].

For operators, the practical read is that the platform decision has already been made for you. ZDNET's own framing is that most people are constrained to Android or iPhone and their other devices follow ^[17]. A fleet standardised on iPhones does not get to evaluate Samsung Health's energy scores, and a fleet on Android does not get to evaluate whatever Apple's app catalogue offers.

What to watch: the provided text ends mid-sentence in the Gemini section, before any enumerated case for the Apple Watch Ultra 3 ^[22]. So the claim that apps decided a three-week head-to-head is currently an assertion without a visible inventory behind it. Anyone buying on that basis should ask which specific apps, whether they exist on both platforms, and whether the watch versions do real work or just mirror notifications. That is the question the hardware parity has made unavoidable, and it is the one still unanswered here.