Want an activity tracker but can’t decide whether to buy a Fitbit wristband or fork out for the rather lovely Apple Watch, for which the new version went on sale today? We pit Apple Watch vs Fitbit to see which comes out best on various aspects: fitness tracking, heart-rate monitoring, design, price, apps, battery life, and so on.
Until it launched its new Fitbit Ionic smartwatch Fitbit didn’t actually label its wristbands as smartwatches. Its old Surge device was dubbed a “superwatch”, and it calls the Blaze is a "Fitness Watch". Otherwise the correct term is activity trackers.
Aside from the Ionic, Fitbits don’t run multiple apps like a smartwatch, but they are directly comparable on many of their fitness-measuring functions, design themes and functions.
As a direct comparison we’ll look at the Apple Watch (including the new Series 3) vs the Fitbit Alta HR, Fitbit Charge 2, Fitbit Blaze and Fitbit Ionic. The Fitbit Flex 2 is the cheapest wristband but has a far more minimal display screen, and no watch function. Read our Fitbit Ionic review.
Keeping fit doesn’t mean you have to be a gym freak or marathon runner. Keeping active throughout the day offers real health benefits too, and both the Apple Watch and Fitbit activity trackers are superb at getting you moving more.
The Apple Watch and Fitbit activity trackers measure steps taken, distance travelled and calories burned. They also show you how many minutes you’ve been active during the day. Each tracks your progress over time and can store historical data, and you set daily goals for yourself.
The accuracy of the trackers is probably less important than how they show your trend of activity and performance against user-set goals.
In addition, the Fitbit wristbands (excluding the Flex 2, Alta and Alta HR) have a barometric altimeter that counts distance climbed (take the hilly route home, not the flat one). The Fitbits also sync weight data from the optional Fitbit Aria scales. As a result the Fitbit models range from everyday fitness and active fitness (like the Apple Watch) and further to sports and performance fitness – with the Ionic supporting running, cross-training, biking, strength and cardio workouts.
Serious runners dismissed the original Apple Watch for their needs, preferring the (now discontinued) Fitbit Surge or other dedicated running watches from the Garmin or Suunto. But that changed with the release of the Series 2 Apple Watch, which features a built-in GPS just like the Fitbit Surge and Ionic.
The Series 2 Watch has now been replaced by the Series 3, which has a much faster processor and better battery life. A version with built-in 4G is also available so it can work without having to take your iPhone with you when you exercise. This makes it a closer match to the Fitbit Ionic, which (with similar built-in GPS, on-board music, notifications and contactless payments) can take care of most of your exercise needs without requiring you carry a phone or wallet around.
Fitness is obviously at the core of the Fitbits, whereas the Apple Watch counts activity tracking among its many features.
The Apple Watch offers two main fitness apps: Activity, which is all about health, movement, wellness and your daily routine; and Workout App, which tracks running, cycling and walking. All this data is collected on your iPhone via the Activity app, although you can get a more holistic view of their health by using the Health app on your iPhone, which integrates data from multiple sources, not only the Watch. Read here for some great tips and advice on how to use the Apple Watch Activity app.
While they work brilliantly with the iPhone, Fitbits do not officially support Apple’s Health Kit, although integration is offered by third-party apps.
You can see at a glance how far you are with your daily movement and health goals by looking at the Apple Watch’s colourful three rings, which light up to show your progress. The Move ring shows calories burned. The Exercise ring displays how many minutes of brisk activity you’ve achieved. And the Stand ring shows how often you’ve stood up to stop sitting down. The aim is to complete each ring every day. It’s a great motivation tool.
Apple defines exercise as any activity that’s equivalent to at least a brisk walk. The Watch looks at your heart rate and movement data, so just going for a walk might not move that green ring as much as you’d think. It wants you to get your heart pumping a bit faster. The Apple Watch learns your habits so will push you harder the more active you get over time.
We love the Apple Watch’s ping to remind you if you’ve been sitting around too long – time to stretch the legs and get the heart rate up for a bit, or at least stand up. Basically it’s a get-off-your-arse alert, from the taptic pulses to your wrist to notifications, that you’ve been idle for a long period of time. You can actually get an alert even when standing up because what the Watch is actually measuring is your lack of moving about.
Fitbit's Reminders To Move work in the same way, and are found on the Flex 2, Alta, Alta HR, Charge 2, Blaze and Ionic.
The Apple Workout app gives you real-time stats for exercise time, distance walked/run, calories burned and pace, and with the update to watchOS 4, it got a whole lot better. It's easier to use, but importantly now works with 80 percent of gym equipment so you'll get the data from the running machine or bike you use at your local.
The lack of built-in GPS (see below) puts the Series 1 Apple Watch behind the Fitbit Ionic in this regard, but the Series 2 and 3 Apple Watch are real contenders. The Watch's compatibility with some excellent third-party running apps really helps too, and there's always the Nike+ version for those that want a more sporty looking smartwatch. Coming soon is an Adidas version of the Ionic.
The Apple Watch and heart-rate-checking Fitbits use something called photoplethysmography to measure your heart rate. This uses green LEDs on the underside of the wristband to detect blood volume and capillary-size changes under pressure. When your heart beats, your capillaries expand and contract based on blood volume changes. The LED lights reflect onto the skin to detect blood volume changes.
Blood is red because it reflects red light and absorbs green light. When your heart beats, the blood flow in your wrist – and the green light absorption – is greater.
The Fitbits monitor your heart rate continuously, 24/7. They can store heart rate data at 1-second intervals during exercise tracking and at 5-second intervals all other times.
On the other hand (or should I say wrist?) the Apple Watch checks your heart rate only every ten minutes during the day. However, it does record your heart rate continuously when the Workout app is turned on, so you get constant feedback during training sessions. The Watch’s built-in heart-rate monitor does support external heart-rate monitors too.
Also, in watchOS 4, Apple has improved the Heart Rate app which now measures your resting heart rate and your recovery heart rate, and can give you notifications if anything seems awry.
Fitbit says that the Ionic has also improved heart-rate measurement, as the LED sensors have closer contact to the wrist.