Apple Watch Ultra vs. Garmin Fenix 7 vs. WHOOP 4.0: Full Comparison & Verdict 2025
Amidst the ever-growing popularity of smart wearables, Apple Watch, Garmin, and Whoop are widely considered three of the heavy hitters in the market. The three brands offer features and functionalities to appeal to a wide range of demographics, including but not limited to fitness enthusiasts and athletes. Among the three brands, Apple Watch Ultra, Garmin Fenix 7 and WHOOP 4.0 stand out the most. Apple Watch Ultra with a tough and longer-lasting smartwatch made for adventuring types who need something a bit more rugged; Garmin Fenix 7 is advanced multi-sports watch, but its new training tools have been carefully designed to make them accessible to a wider range of athletes; WHOOP 4.0 is the most lightweight and minimal so nothing gets in the way of a snatch, swing, or stride. So Apple Watch Ultra vs. Garmin Fenix 7 vs. WHOOP 4.0: which fitness tracker is best for you? To answer the question, we'll compare their price, design, GPS tracking accuracy, battery life, smart features, and value for money in order to help you find the best smartwatch.
Apple Watch Ultra Reviews
The Apple Watch Ultra ($799) is the best Apple Watch you can buy right now. The Apple Watch Ultra represents the most dramatic update ever to Apple’s smartwatch lineup, and it does so with a completely different design, a bigger display and more sensors than found on Apple Watch Series 8. And it has rolled out a low-power mode for workouts which extends the Apple Watch Ultra's battery life even further.
It’s also the first Apple Watch that only comes in a titanium finish, designed to make the bigger unit more manageable in terms of its weight. With its titanium finish, rugged design and activity-focused features, the Watch Ultra appeals to fans of extreme sports and outdoor adventures. But you don’t need to be a sports fan if you simply want the most advanced smartwatch Apple makes, with the longest battery life and biggest display.
While its lack of workout recovery data is not going to challenge Garmin for the extreme sports enthusiast market just yet, it should cause its competitors to take note. If you aren’t already on the bandwagon, and decide it’s time to get in better shape or finally want to tackle something like kayaking or scuba diving, the Ultra is here for you.
Pros & Cons
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Garmin Fenix 7 Reviews
The Garmin’s latest top-of-the-line Fenix 7 track-it-all adventure smartwatch introduces a number of new features, better GPS, longer battery life and improved tech – as well as a touchscreen to go with its buttons. Starting at $699.99, it can hit $999.99 if you pick the largest, most fancy version. The Fenix 7 comes in a range of sizes, weights, materials and with an optional solar-charging system, all of which have full mapping.
The new touchscreen makes the Fenix feel slicker and more modern. You can tap and hold on widgets on the watch face to jump straight to things such as a graph of your heart rate, battery power settings or notifications, or swipe through menus, screens and maps. For daily smartwatch functions it works very well.
But touchscreens are unreliable during activities, don’t work well in the wet nor with gloves. Garmin has kept its excellent five-button control system and disables touch when you start most activities, to prevent accidental pauses of runs or similar. Because of the smart way Garmin has integrated the touch system with buttons, everything can be controlled via either method or both at the same time.
The transflective colour LCD screen looks the same as its predecessor – clear and easy to read in direct sunlight, with a backlight for the night. But the power-efficient technology doesn’t look as slick as OLED screens.
The longer 15-day-plus battery life, faster performance, better GPS, a touchscreen and stamina metrics are great additions to the comprehensive tracking Garmin is known for.
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WHOOP 4.0 Reviews
The Whoop 4.0 is a fitness tracker that aims to help you optimize your exercise and recovery time. It tracks health metrics like your pulse, heart rate variability, blood oxygen levels, and skin temperature, as well as sleep data like the time spent in each sleep stage, efficiency (the amount of time in bed you actually spend asleep), and respiratory rate. It offers automatic activity and sleep tracking, as well as manual tracking of over 80 workouts and recovery activities, such as massages or ice baths.
To help users better understand the information it records, Whoop turns your health data into three scores to indicate your “strain,” sleep, and recovery levels. The strain score is measured on a scale from zero to 21 and is calculated based on the amount of time spent in an elevated heart rate zone—the more time you spend in an elevated zone, the higher your score. Whoop’s sleep and recovery scores range from 0% to 100% and, similar to the strain score, the more rested and relaxed you are, the higher your scores.
No screen. No notifications. Nothing but nonstop data collection. Designed to be worn 24/7, the advanced WHOOP 4.0 is lightweight and minimal so nothing gets in the way of a snatch, swing, or stride. But with an ongoing $30 monthly subscription, it could be more expensive than other trackers or even the Apple Watch, which records much of the same data (and even more).
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The Whoop 4.0 (available at Whoop).
Apple Watch Ultra vs. Garmin Fenix 7 vs. WHOOP 4.0: Price
Apple Watch Ultra is more expensive ($799) than all the other Apple Watches, save for the luxury Hermes Edition.
The Garmin Fenix 7, Garmin Fenix 7S, and Garmin Fenix 7X are the three new smartwatch models available in non-solar, solar, and sapphire solar models. Prices for each model are as follows:
| Garmin Fenix 7S | Garmin Fenix 7 | Garmin Fenix 7X |
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WHOOP 4.0
Unlike other fitness trackers, the main expense of using the Whoop 4.0 is the membership fee to use its companion app—and without that, the device itself is totally useless. The subscription costs $360 a year if you pay monthly at $30, $300 for one year if you pay up front (or $25 a month), or $480 for two years ($240 a year or $20 a month). The basic black wearable is included with Whoop’s subscription fees, though different color straps will cost you an additional $49 to $99.
Apple Watch Ultra vs. Garmin Fenix 7 vs. WHOOP 4.0: Design
The Apple Watch Ultra features an all-new and more rugged design with a titanium case. Both the Side Button and Digital Crown are raised from the case to make them easier to use when wearing gloves. On the opposite side is a new Action button that can be customized to start different tasks like starting a workout. The 49mm screen, the largest ever for an Apple Watch, is protected by a sapphire cover and offers up to 2,000 nits of brightness.
There is also an improved, three-microphone array for windy environments and dual speakers for improved audio call volume and Siri interaction. It's also swimproof up to 100 meters.
All of that design does come at a cost of added weight. The Apple Watch Ultra is 61.3 grams. It is the heaviest of the three fitness watches.
The Garmin Fenix series has always been known for its rugged design, and the Fenix 7 improves on that with its tough housing and metal-reinforced lugs. All the models have cases made of the regular fiber-polymer material. However, while the Standard and Solar models have stainless steel bezel, stainless steel rear cover with Corning Gorilla Glass DX protecting the display, the Sapphire Solar models have titanium bezel, titanium rear cover and Sapphire glass. Titanium and sapphire are among the materials used in the new flagship smartwatches, along with silicone straps.
The Sapphire models also weigh a little less than their Standard and Solar counterparts. All the models are rated 10ATM, so you can actually wear this to the pool ocean, shower and otherwise (diving from a very tall height might subject these devices to intense pressure).
In addition, the Garmin Fenix 7 series smartwatch comes with a touchscreen and five buttons. The wearables also have multi-LED flashlights.
At first glance, the Whoop 4.0 band comes across as a pretty basic fitness wearable: it’s an optical heart rate sensor unit attached to a band. Of course, the actual technology involved is more complicated than this, but Whoop 4.0 is a straightforward device from a day-to-day wear perspective.
The Whoop 4.0 with features three green, one red and one infrared LEDs (five in total), four photodiodes, and advanced algorithms to improve accuracy and heart rate measurements.
And the Whoop 4.0 with vibration motor that is used for the wake-up alarm. It works well as advertised and is a nice touch, especially considering the emphasis on sleep tracking in the Whoop ecosystem. The Whoop 4.0 can also measure skin temperature, blood oxygen levels, heart rate variability and resting heart rate.
Apple Watch Ultra vs. Garmin Fenix 7 vs. WHOOP 4.0: Display
Apple Watch Ultra vs. Garmin Fenix 7
The Fenix 7 is available in three different sizes — 42mm, 47mm and 51mm. As well as looking completely different, one of the main things you’ll notice when taking both watches out is the screen is a lot brighter on the Apple Watch Ultra. The Ultra’s display has a brightness of 2,000 nits, which is twice as bright as the screen on the Apple Watch Series 8. Compared to the Fenix 7, which has a MIP screen, the Ultra’s screen is much brighter, although this is partly because the Fenix 7 solar editions have power glass, designed to harness the power of the sun’s rays to charge the watch. From a Garmin perspective, a fairer comparison would be the Apple Watch Ultra and the Garmin Epix 2, which has an AMOLED screen.
WHOOP 4.0: No display.
Apple Watch Ultra vs. Garmin Fenix 7 vs. WHOOP 4.0: Battery life
The Apple Watch Ultra lasts 36 hours with normal use, doubling the 18-hour estimate of the Apple Watch Series 8 & the Apple Watch Series 7.
There is a difference is in battery life. the Fenix 7s boasts 37 hours GPS that extends up to 46 with solar, the Fenix 7 is 57 hours GPS 73 hours with solar, and the Fenix 7x is 89 hours GPS only and that goes up to 122 hours with solar.
| Fenix 7 Battery Life | ||
| Without solar | With solar | |
Smartwatch mode | 18 days | Up to 22 days |
GPS-only | 57 hours | Up to 73 hours |
All satellite systems GPS | 40 hours | Up to 48 hours |
All satellite systems GPS, plus music | Up to 10 hours | Not given |
| All satellite systems, plus multi-band GPS | 23 hours | Up to 26 hours |
| Fenix 7S Battery Life | ||
| Without solar | With solar | |
Smartwatch mode | 11 days | Up to 14 days |
GPS-only | 37 hours | Up to 46 hours |
All satellite systems GPS | 26 hours | Up to 30 hours |
All satellite systems GPS, plus music | Up to 7 hours | Not given |
| All satellite systems, plus multi-band GPS | 15 hours | Up to 16 hours |
| Fenix 7X Battery Life | ||
Without solar | With solar | |
Smartwatch mode | 28 days | Up to 37 days |
GPS-only | 89 hours | Up to 122 hours |
All satellite systems GPS | 63 hours | Up to 77 hours |
All satellite systems GPS, plus music | Up to 16 hours | Not given |
| All satellite systems, plus multi-band GPS | 36 hours | Up to 41 hours |
WHOOP 4.0 offers 4-5 days of battery life on a full charge. Please note, using Strain Coach and WHOOP Live for long periods of time can have an impact on battery life.
Apple Watch Ultra vs. Garmin Fenix 7 vs. WHOOP 4.0: Sports Tracking
Apple Watch Ultra vs. Garmin Fenix 7
As you’d expect from outsdoor watches, both the Apple Watch Ultra and the Garmin Fenix 7 offer a full suite of sensors. Both watches have the ability to track your heart rate, sleep, stress, and sporting activities. Both can take skin temperature readings to give you more accurate sleep data, and on the Apple Watch Ultra, help you track your menstrual cycle (read more about the Apple Watch skin temperature sensor here), and do blood oxygen readings.
The Apple Watch Ultra also features a depth gauge which, working together with the Oceanic+ app, can automatically transform the Ultra into a dive watch when you go beneath the waves. Garmin’s Fenix 7 doesn’t have the same dive credentials, nor can it read your skin temperature. But it does offer a generous set of tracking tools, including pulse and blood oxygen sensors. From surfing to skiing to sprints, it also comes equipped with a catalogue of sport profiles, each with readouts specific to the activity. Besides getting serious about stats, its skills go deep for each discipline, ranging from gradient-adjusted pacing for runners, to ascent planning for mountain climbers. Support for multiple satellite systems improves navigation accuracy too, whether you’re following trail routes or golf maps. And that’s all in addition to daily wellness guidance and long-term training metrics to help you improve your performance.
When it comes to workout tracking itself, the Fenix 7 does have more options available, with niche workout modes like Snowshoe and Cyclocross. That said, the Apple Watch Ultra has most of the traditional workout modes covered(opens in new tab), and its more durable display and water resistance of up to 100 meters mean you could use it for sports like water skiing, wind surfing, and diving.
You can also create your own running sessions on both watches — handy if you’re using either to follow a training plan. The main difference between the two from a training perspective is the connected apps — the Garmin Connect app is much more proficient, and allows you to download training plans seamlessly. The Fenix 7 also allows you to program races and has advanced running metrics like Stamina, and Up Ahead, and a wealth of recovery metrics, that the Apple Watch Ultra lacks.
If you’re not racing, but you are planning on taking your watch on a multi-day hike, one key difference between the two watches is the ability to store maps. The Apple Watch Ultra doesn’t let you do this without downloading a third-party app, whereas the offline mapping functionality on the Garmin Fenix 7 had a big upgrade. The new map manager on the Garmin Fenix 7 series means all maps are free and can be downloaded directly to the watch (although this does take a while). The non-sapphire editions of the Garmin Fenix 7 have 16GB of map storage, whereas the sapphire versions have 32GB.
WHOOP 4.0
The Whoop 4.0 tracks health metrics like your pulse, heart rate variability, blood oxygen levels, and skin temperature, as well as sleep data like the time spent in each sleep stage, efficiency (the amount of time in bed you actually spend asleep), and respiratory rate.
Apple Watch Ultra vs. Garmin Fenix 7 vs. WHOOP 4.0: Smartwatch Features
The Whoop 4.0 is a fitness tracker that aims to help you optimize your exercise and recovery time. So here we only compare Apple Watch Ultra and Garmin Fenix 7.
Apple Watch Ultra vs. Garmin Fenix 7
From a smartwatch perspective, the Apple Watch Ultra has all of the features of the Apple Watch, just in a bigger, more rugged package. You get access to the best smartwatch app store of them all, you can make calls with your watch. And as all Ultra watches have 4G cellular, you don’t even need a phone nearby to do so. You can, of course, also talk to Siri through the watch as it has a triple microphone array and dual speakers. This setup can also be used to send messages, using your voice rather than a virtual keyboard. The Watch Ultra also has an ECG heart health sensor and a temperature sensor, which can estimate the time of ovulation in a person’s menses cycle after the fact.
The Garmin Fenix 7’s classic smartwatch features are largely limited to receiving notifications from your phone, and downloading relatively basic apps from the Garmin Connect store. However, the Fenix 7 does have a bunch of smart features that don’t rely on internet access. It can control Garmin Varia bike lights. You can connect to a bike turbo trainer and use the watch to control its resistance, and send custom ride data to it without the need for standalone platforms like TrainerRoad or Zwift. A Fenix 7 also lets you wirelessly connect other fitness accessories like footpods and heart rate straps over Bluetooth or ANT+. You can download massive map files that cover entire continents, and work out routes from point A to point B without needing a phone or internet connection.
| All in all, compared to the Apple Watch Ultra, the Fenix 7 is a little lacking. There is an on-watch app store, although the apps you can download to the watch are a little basic. There’s also Garmin Pay, and the ability to download and play music from Spotify, Deezer, and Amazon Music. Plus, you can read messages from the watch when it’s connected to your phone, but you can’t respond to them from your wrist. |
Apple Watch Ultra vs. Garmin Fenix 7 vs. WHOOP 4.0: Verdict
The Apple Watch Ultra is more durable than the standard Fenix 7 and less expensive than the Sapphire Solar edition, which is the only option with equivalent crystal. The Ultra can also serve as a dive watch, complete with depth gauge. And it packs a display that’s bigger, brighter and more vibrant. If you want a proper smartwatch to take into the wild, the Ultra is the one.
But, the Garmin Fenix 7 is a stellar technical tool. Its dedicated activity profiles measure enough metrics to please a sports scientist, while its pared-back interface is all about efficiency. Its smart features might be fewer, but it’s every bit the capable companion on land. And for many, the dealbreaker will be that battery life. For fans of extended expeditions, the Apple Watch has no answer to the Fenix 7’s longevity.
In the end, if you just want a simple fitness tracker, then WHOOP 4.0 is a good choice. In the short term it's ok, but in the long run it's expensive.
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