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Best smartwatch for iPhone 2020: Apple Watch, Wear OS, Tizen and more

Best smartwatch for iPhone
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Choosing the best smartwatch for iPhone is not quite as simple as buying the latest Apple Watch. There are more options than you might think when it comes to picking a wearable that plays nice with iOS.

That said, the Apple Watch integrates so well with iPhones that it is our number one pick. The Apple Watch 5 melds great design with excellent notification and fitness features for the most seamless wrist-based Apple experience. 

But the Apple Watch 3 is still so good that Apple sells it at half the price of the Series 5, so it’s a great pick. The Apple Watch 4 is also a top choice, though it’s a little harder to find as Apple does not sell it any more.   

What watch should you use with your iPhone?

Older Apple Watches will still work but you should try and get one as new as possible within your budget for compatibility with the latest iPhones and apps. 

If you’re seriously into fitness then you might want to consider a dedicated fitness or running smartwatch that might handle your exercise data to a more detailed degree. These devices also generally have better battery life than Apple Watches, too.

Then you also have other smartwatch options from the likes of Samsung, TicWatch and Withings. They are based on different operating systems and sometimes simpler designs but will still connect via their dedicated apps with your iPhone. Take a look at our detailed recommendations below, along with our full reviews for each smartwatch to make sure you choose one that’s right for you.

Best Apple Watch: what are the choices?

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Apple Watch 5 review

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Apple Watch 5 review

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1. Apple Watch 5

The best Apple Watch money can buy

OS: watchOS 6 | Compatibility: iOS | Display: 1.78" OLED | Processor: Apple S5 | Band sizes: Varies based on watch size | Onboard storage: 32GB | Battery: 1 day to 36 hours | Charging method: Wireless | IP rating: Water-resistant to 50m | Connectivity: Wi-Fi, Bluetooth, NFC, LTE

Always-on display
More storage
Battery isn't incredible
Still pricey

Looking for the very best Apple Watch on the market? It probably won't be a huge surprise to learn that it's the newest one. The Apple Watch 5 is the device that offers the best selection of features within Apple's range, but it's not a cheap option.

It's currently the most expensive Apple Watch, and the biggest upgrade for that is the fact you'll get an always-on display.

This doesn't drain your battery life as much as you may expect as the watch will dim its screen to offer you notifications on your wrist at all times rather than you having to raise it and wake it up to see your stats.

WatchOS 6 is available on the watch, so you can downloads apps directly to your wrist and it comes with a compass feature for the very first time.

If you own an Apple Watch 4, there's not much reason to upgrade here but if you own an older Apple Watch or you're looking to get your first smartwatch this may be a solid option for you.

Read the full Apple Watch 5 review

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2. Apple Watch 4

Once best Apple Watch money can buy

OS: watchOS 5 | Compatibility: iOS | Display: 1.78" OLED | Processor: Apple S4 | Band sizes: Varies based on watch size | Onboard storage: 16GB | Battery: 1 to 2 days | Charging method: Wireless | IP rating: Water-resistant to 50m | Connectivity: Wi-Fi, Bluetooth, NFC, LTE

Larger display
Lightweight design
Battery could be better
Doesn't offer always-on

The introduction of the Apple Watch 5 may have seen the Apple Watch 4 drop in terms of pure excitement, but it's not cheaper than ever and it's not all that disimilar to the latest device.

This was the first smartwatch from the company to increase the display size to a 1.78-inch OLED. That looks great on your wrist, and the device comes in either 44mm or 40mm versions.

We particularly liked that the speaker is louder, plus the ECG monitor tech was a big upgrade at the time too. 

You won't get the benefits of an always-on display, but if you want to save a bit of money you may want to look at the Apple Watch 4 over the latest addition to the range.

Read our full Apple Watch 4 review

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3. Apple Watch 3

Now even cheaper, but still great

OS: watchOS 5 | Compatibility: iOS | Display: 1.65" OLED | Processor: Apple S3 | Band sizes: Varies based on watch size | Onboard storage: 16GB | Battery: 1 to 2 days | Charging method: Wireless | IP rating: Water-resistant to 50m | Connectivity: Wi-Fi, Bluetooth, NFC, LTE

Good battery life
Clear, bright screen
Only iPhone compatible
Siri still patchy

The Apple Watch 3 was of course the best smartwatch to use with an iPhone... but it's not the best anymore. Even though you can now buy the Apple Watch 4 and 5, this is still a fantastic smartwatch.

The Series 3 has a bright, high-quality screen, built-in GPS, waterproofing, optical heart rate monitoring and well over a day of battery life, plus all the things that make the Apple Watch 2 great, like a stylish design, water resistance and enough fitness features to cater to most users.

It’s a great all-rounder then, with style and substance, suited to both the office and the gym. There’s even an LTE model – though at a higher price. And of course, being an Apple Watch, it works perfectly with iPhone.

Read our full Apple Watch 3 review

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4. Apple Watch Series 2

Good still if you can find one

OS: watchOS 5 | Compatibility: iOS | Display: 1.53" OLED | Processor: Apple S2 | Band sizes: Varies drastically per watch size | Onboard storage: 8GB (only 2GB and 75MB allowed for music and photos, respectively) | Battery: A day and a half | Charging method: Wireless | IP rating: Water-resistant to 50m | Connectivity: Wi-Fi, Bluetooth, NFC

Water-resistant
GPS onboard
Ageing processor 
Hard to find

There's a lot going for the Apple Watch 2 - if you can find one, that is. Apple didn’t sell it for long and it’s much easier to find the Apple Watch 3 as Apple still sells it for a reasonable price.

If you’re really on a budget and want an Apple Watch though, then the Series 2 will still serve you well and gets software updates still. It's water-resistant so you won't have to worry about getting it wet in the rain when you're out for a jog.

With GPS onboard and watchOS 6 software running on it, if you own an iPhone 6s or later this is a great choice, and a touch more affordable than the Apple Watch 3 or 4. 

Apple itself has stopped selling it, so the Watch 2 is now hard to find and often if you do spot it at a third-party retailer it'll be around the same price or sometimes even more expensive than the watch just above this one so be sure to check first. 

Read our full Apple Watch 2 review

Wear OS and Tizen watches

You’re not just limited to the Apple Watch if you want a smartwatch for your iPhone. There are some great compatible options that run either Google’s Wear OS or Samsung’s Tizen software.

As you might expect, Tizen is only found on Samsung smartwatches but they are all excellent, offering attractive circular designs, top specs and good battery life.

Wear OS is used by several manufacturers including Fossil and TicWatch, two brands who tend to make the best of Google’s platform.

Along with their Samsung counterparts they have GPS, heart rate sensors and just as many tracking features as most Apple Watches. Some of them also cost a lot less than the latest Apple wearable, meaning you can save some money and still get the features you want, all running in harmony with your iPhone. 

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1. Samsung Galaxy Watch

Our favorite smartwatch right now

OS: Tizen OS | Compatibility: Android, iOS | Display: 1.2" or 1.3" 360 x 360 Super AMOLED | Processor: Dual-core 1.15GHz | Band sizes: 22mm or 20mm | Onboard storage: 4GB | Battery duration: 4 days on 46mm / less on 42mm | Charging method: Wireless | IP rating: 50m | Connectivity: Wi-Fi, Bluetooth

Impressive battery life
Useful rotating bezel
Annoying charger
Bixby isn't great

The latest Samsung watch is our favorite money can buy right now, but it's not our favorite to recommend alongside an iPhone. We found the Galaxy Watch to work best with Samsung phones, but if you own an iPhone it'll still work really well and will offer top-end fitness features alongside its premium look.

We particularly like the design of the larger Galaxy Watch, but you have the choice of either a 46mm or 42mm build. Each will sit large on your wrist but also offer a big, bright display.

Opt for the LTE version and you'll be able to get phone calls and notifications when you're on the move too. The rotating bezel around the outside is one of the main highlights, and the 46mm version also comes with four days of battery life from a single charge.

It may not be the best smartwatch to work with your iPhone, but it is still a fantastic choice if you like the design and look of the Galaxy Watch from Samsung.

Read the full Samsung Galaxy Watch review

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2. Fossil Sport

Fossil's latest big smartwatch attempt

Compatibility: Android, iOS | Display: 1.2-inch 390 x 390 AMOLED | Processor: Quad-core 1.2GHz | Band sizes: 22mm straps | Onboard storage: 4GB | Battery duration: Two days | Charging method: Proprietary | IP rating: IP68 | Connectivity: Wi-Fi, Bluetooth, GPS

Lightweight design
Powerful watch
Lacks high-end features
GPS can be slow

Our favorite Wear OS watch right now is the Fossil Sport, which is cheaper than a lot of the watches you've read about above. 

It features the latest Qualcomm Snapdragon 3100 chipset that offers enough power to run any of the apps you'll find in Wear OS, and in our experience we found the whole interface to be notably smooth.

It'll last for around two days from a single charge, and the design here feels premium on the wrist when you consider how much it costs compared to other Wear OS watches.

There isn't much uniqueness to the Fossil Sport, but it's good at pretty much everything you'd expect a smartwatch to do and it'll work with your iPhone too.

Read the full Fossil Sport review

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3. Samsung Galaxy Watch Active 2

Samsung’s sporty option

OS: Tizen OS | Compatibility: Android, iOS | Display: 1.4" 360 x 360 Super AMOLED | Processor: Dual-core 1.15GHz | Band sizes: 20mm | Onboard storage: 4GB | Battery duration: Around 2 days | Charging method: Wireless | IP rating: 50m | Connectivity: Wi-Fi, Bluetooth

Top performance 
Two-day battery life
Quite expensive 
Limited app choice 

The Samsung Galaxy Watch Active 2 is a fine Tizen smartwatch with great battery life and solid performance. 

Its circular display might attract you compared to the Apple Watch’s squarish look, and the Active 2 has a clever digital bezel to navigate menus. Its fitness features are just as good as Apple’s but you’ll have to use the Samsung Health app for iOS instead of Apple Health.

It’s waterproof and can track tons of different workouts including outdoor runs using GPS. There’s even a 4G option. Just bear in mind that while it works with an iPhone, it won’t be as smooth an experience as an Apple Watch. 

Read the Samsung Galaxy Watch Active 2 review 

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4. TicWatch E2

A fully-loaded Wear OS watch you’ve never heard of

OS: Wear OS | Compatibility: Android 4.3+, iOS 8+ | Display: 1.39" 400 x 400 OLED | Processor: Snapdragon Wear 2100 | Onboard storage: 4GB | Battery duration: Around 48h | Charging method: Magnetic connecting pin | IP rating: IP67 | Connectivity: Wi-Fi, Bluetooth 4.1

Affordable price
Easily two day battery life
No NFC for payments
Bland design

The TicWatch E2 is one of the more affordable devices on this list, and it's worth noting that this isn't the most premium looking device. That said, it's still a fantastic Wear OS watch.

It offers solid battery life as well as built-in GPS, an accurate heart rate sensor and sleep tracking as well.

The latest Wear OS software is running on the watch too, but you won't be able to get contactless payments as there's no NFC on this watch.

Read the full TicWatch E2 review

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5. TicWatch Pro

Our favorite Wear OS watch comes with two screens

OS: Wear OS | Compatibility: Android 4.3+, iOS 8+ | Display: 1.4" 400 x 400 OLED paired with LCD screen | Processor: Qualcomm Snapdragon Wear 2100 | Onboard storage: 4GB | Battery duration: Up to 48h, 5 extra days in Essential mode | Charging method: Magnetic connecting pin | IP rating: IP68 | Connectivity: Wi-Fi, Bluetooth 4.1, NFC

Innovative screen tech
Premium design
Limited app
No LTE features

Our favorite Wear OS watch is the TicWatch Pro, which you can use easily with your iPhone. TicWatch is a little known brand so far, but this watch comes with two different displays that helps it stand out from the rest of the crowd.

There's a transparent LCD display at the top with a full color OLED panel below it. That means you can get a full Wear OS watch experience with the TicWatch Pro, but when the battery dies off you can then still get some details like heart rate, date and time through the secondary display.

That's a great feature - but there's lots else to love here including GPS, NFC for Google Pay and the Snapdragon Wear 2100 chipset we've seen in almost all the Wear OS watches on this list.

The best part is the lower price than a lot of other top-end smartwatches, which makes this one of the best Wear OS choices to use alongside your iPhone.

Read the full TicWatch Pro review

Other alternatives

There are quite a few devices you can use with your iPhone including some running Fitbit OS and others that you may not even refer directly to as a smartwatch. Read on about them all below:

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Fitbit Versa 2

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Fitbit Versa 2

The best smartwatch from Fitbit

OS: Fitbit OS | Compatibility: Android, iOS | Display: 1.4" 300 x 300 AMOLED | Processor: Dual-core 1.0GHz | Onboard storage: 2.5GB | Battery duration: 3-4 days | Charging method: Proprietary charger | IP rating: 50M water resistant | Connectivity: Wi-Fi, Bluetooth

Always-on display 
Five day battery life
No GPS
Design not for everyone 

A third attempt at the smartwatch from Fitbit has seen the brand create one of its best devices in years. The Fitbit Versa 2 is slimmer and smaller on your wrist than an Apple Watch and offers a lot of great fitness features including swim tracking as well as HIIT coaching.

The Versa 2 is also cheaper than Fitbit's other watch called the Ionic (which you'll find coming up in this list) making it an attractive option for your wallet as well as your wrist.

Fitbit OS isn't as fully fledged as the Wear OS or Apple Watch devices above in this list as there are still a limited amount of apps available to you, but if you want to have a watch as a fashion piece and focus on the fitness elements you'll enjoy the Versa 2.

It allows you to listen to music on the move, plus you have Fitbit Pay so you can do contactless payments if your bank supports it. Our main gripe with the Versa 2 is the lack of GPS, but if you plan to exercise with your phone in your pocket or strapped to your arm it won’t be an issue.

Read the full Fitbit Versa 2 review 

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Fitbit Ionic

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Fitbit Ionic

A noble first effort from the fitness kingpin

OS: Fitbit OS | Compatibility: iOS / Android | Display: 1.45-inch LCD | Processor: Unknown | Band sizes: Small (its wrists 5.5" - 6.7" in circumference) and large (its wrists 6.7" - 8.1" in circumference) in box | Onboard storage: 7 days of movement | Battery: 4+ days (10 hours of GPS) | Charging method: Proprietary wired | IP rating: 50m water resistance | Connectivity: Bluetooth, Wi-Fi, NFC, GPS

Solid battery life
Great fitness features
Controversial design
Lack of apps

Fitbit’s answer to the Apple Watch’s fitness threat piles all of its best fitness-tracking features into a highly functional smart timepiece. 

There’s GPS, continued heart rate tracking, excellent multi-day battery life and the ability to track multiple activities. 

That being said, the Fitbit Ionic runs off the bespoke Fitbit OS so it doesn’t offer the full fat smartwatch features of watchOS or Wear OS.

There’s also a shortage of apps available right now, you can download around 300 songs and connect Bluetooth headphones for phone-free exercise. Also, the design’s a bit controversial and very much has the look of a first-gen smartphone.

Read the full Fitbit Ionic review

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Garmin Forerunner 735XT

For serious fitness fanatics only

OS: Forerunner 735 software | Compatibility: iOS / Android | Display: 1.23-inch IPS | Processor: Unknown | Band sizes: QuickFit 22mm | Onboard storage: 80 hours activity data | Battery: 14 hours in GPS mode | Charging method: Proprietary wired | IP rating: 5ATM | Connectivity: Bluetooth, GPS

Great looking
Advanced fitness and training features
Thick-ish bezel
No music storage

If you’re seeking a powerful fitness companion rather than a wearable extension of your smartphone, they don’t come much better than the Garmin Forerunner 735XT

The multi-sport GPS watch, designed with triathletes in mind, features an optical heart rate sensor and reams of deep data insights into your performance. 

Runners, for example, will glean metrics like ground contact time, balance, stride length, vertical ratio and much more. There’s a VO2 max estimator, race predictor and recovery adviser too.

Read the full Garmin Forerunner 735XT review

Withings Steel HR

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Withings Steel HR

A great hybrid choice

OS: N/A | Compatibility: iOS / Android | Display: OLED monochrome 72 x 36 | Processor: Unknown | Band sizes: Fits wrists up to 200 mm | Onboard storage: One week of data | Battery: 25 days | Charging method: Magnetic charging pad | IP rating: 5ATM (50m) | Connectivity: Bluetooth LE

Best-in-class design
Reliable data
Expensive for functionality offered
No replaceable battery

This hybrid watch used to be called the Nokia Steel HR, but it has now been rebranded as the Withings Steel HR.

It features a built-in digital display that’ll show your heart rate in real time, as well as step progress and limited smartphone notifications. It has the neat analogue dial showing process towards a daily movement goal and can automatically track activities like running and swimming. 

There’s no GPS so you can’t expect hyper-accurate distance tracking, but the Steel HR is still a fantastic, stylish watch with great battery life that you can wear around the clock.

Read the full Withings Steel HR review

Looking for a smart running watch?

You should also check out our extensive range of devices to help you run - in our cunningly named best running watches round up - as many of these offer incredibly battery life as well as smart notifications from your wrist.

For instance, the Garmin Forerunner 935 will last almost 10 days on a single charge while running every day, allow you to take or reject calls and control your music - plus it's one of the most gifted exercise companions we've seen.

So if you're thinking of getting fitter - check out the burgeoning world of running devices to help you out.