Want to compare fitness trackers or smartwatches before you buy? Now you can with this easy to use tool.

With so many different options, it is not easy to pick the perfect fitness tracker or smartwatch. After all, this is something that will be sitting on your wrist 24/7 for the foreseeable future.

The right wearable will be based on your individual needs; whether it’s step counting, sleep tracking or 24/7 heart rate tracking, there’s something for everyone. That said, you shouldn’t have to scour the internet for days and weeks to do research and filter down your choices.

Essential reading: Top fitness trackers and health gadgets

We are dedicated to helping consumers make sense of this fast growing market and stay up-to-date on the latest health and fitness tech industry news and product releases. This space is now awash with manufacturers each fighting for a slice of the wearable pie.

While some of these devices may seem pretty similar, a closer look reveals small but important differences. To that end, we have created a tool which allows you to pick any 10 fitness trackers, and compare them side-by-side to view features, technical specifications and more.

You can do the same for smartwatches, heart rate monitors, biometric headphones, smart scales and other connected wearables. We have nearly 1,000 gadgets in our database. The full range of options can be seen in our Compare Tool menu option.

If you were, for example, to pick the Apple Watch Series 4,  Fitbit Alta HR, Fitbit Charge 3 and Garmin Vivoactive 3 – this is what you would get.

 Apple Watch Series 4Fitbit Alta HRFitbit Charge 3Garmin Vivoactive 3
apple watch series 4 150x150 - Want to compare fitness trackers or smartwatches before you buy? Now you can with this easy to use tool.review fitbit alta hr the ultra slim heart rate tracker 150x150 - Want to compare fitness trackers or smartwatches before you buy? Now you can with this easy to use tool.894f8e96 584a 40be b004 4400151cac88 150x150 - Want to compare fitness trackers or smartwatches before you buy? Now you can with this easy to use tool.IMG 0837 150x150 - Want to compare fitness trackers or smartwatches before you buy? Now you can with this easy to use tool.
Tech specs 
Size40 mm (band fits 130-200mm wrists)
44 mm (band fits 140-210mm wrists)
Device Dimensions: 15 mm x 10 mm x 35 mm (W x D x L)
(Sizes depend on type of band)
Device Dimensions: 18.3 mm x 11.8 mm x 38 mm (W x D x L)
One size (small and large bands included)
43.4 x 43.4 x 11.7 mm
MaterialSapphire crystal and ceramic back.Wristband is made of a flexible, durable elastomer. The tracker is made with surgical-grade stainless steel, and the buckle is made with aluminum.Built of more lightweight material including an aerospace grade aluminum case and Corning Gorilla Glass 3 display. The housing and buckle are made of anodized aluminum.Case material: fiber-reinforced polymer and stainless steel
Lens material: Corning® Gorilla® Glass 3
Bezel material: stainless steel
ChargingWireless chargingUSBUSBUSB
BatteryLithium-ionLithium-polymerLithium-polymerRechargeable lithium-ion
Battery life18+ hoursup to 7 daysup to 7 daysGPS mode: Up to 13 hours
Smartwatch mode: Up to 7 days
Water-resistance5 ATM (50 metres)Sweat, rain and splash proof5 ATM5 ATM
WeightCase weight: 30.1g (for 40mm version); 36.7g (for 44mm version)15 grams29 grams43 g
SensorAmbient light, optical heart rate sensor, Electrical heart sensor, improved accelerometer up to 32 g‑forces, improved gyroscope, GPS (GLONASS, Galileo, and QZSS), barometric altimeter, ambient light sensor3-axis accelerometer, Vibration motor, optical heart rate sensorOptical heart rate tracker, 3-axis accelerometer, altimeter, SpO2, vibration motorGPS, barometric altimeter, compass, accelerometer, thermometer, heart rate
DisplayLTPO OLED Retina display with Force Touch (1000 nits), Ion-X strengthened glassB&W OLED touchscreenOLED full touchscreen, TFTsunlight-visible, transflective memory-in-pixel (MIP), 240 x 240 pixels
Screen size44mm: 977 sq mm display area (368 x 448 pixel resolution)
40mm: 759 sq mm display area (324 x 394 pixel resolution)
1.4-inch, 128 x 36 pixel resolution38 x 18.3mm1.2" (30.4mm) diameter
ColorsA number of aluminum finishes anodized in silver, gold and space gray. You can also pick up the device in gold stainless steel with a matching Milanese band, joining the silver and space black stainless steel models.Black, Blue/Gray, Coral, FuchsiaMultipleBlack, White
OtherPLATFORM: watchOS
PROCESSOR: S4 with 64-bit dual-core processor, W3 Apple wireless chip
MEMORY: 512 RAM, 16GB storage
CONNECTIVITY: Bluetooth 4.0, NFC, WiFi, LTE and UMTS cellular radio
NFC (Special edition)
Connectivity: Bluetooth, WiFi
Charge 3 stores your stats and data for 7 days in between the times you sync your tracker.
PLATFORM: Home Grown OS
PROCESSOR: Unknown
MEMORY: 7 timed activities, 14 days of activity tracking data
CONNECTIVITY: WiFi, Bluetooth
Activity tracking 
StepsYesYesYesYes
DistanceYesYesYesYes
Calories burnedYesYesYesYes
ActivityYesYesYesYes
FloorsYesYesYes
SleepYesYesYes
Heart rateYes24/724/7Yes
Stress & recoveryYes
UV exposure
Skin temperature
Galvanic skin response
Hydration level
Calorie intake
GPSYes (GPS,GLONASS, Galileo, and QZSS)Connected GPSYes
Running featuresWatch displays up to 5 metrics during your run (time, distance, current pace and average pace, heart rate, active calories or total calories).Preloaded running profiles, GPS based distance/time/pace, run workouts, foot pod capable
Swimming featuresPool swim and open water swim. At the end of a swim, the watch displays the time of day the activity took place, dominant stroke used (auto-detection is used), distance, workout time, pool length, laps completed, average pace, average heart rate, and both active and total calories burned, as well as the weather at your location. Preloaded swim profiles; Pool swim metrics (lengths, distance, pace, stroke count/rate, calories); Stroke type detection (freestyle, backstroke, breaststroke, butterfly); Pool swim workouts
Swim efficiency (SWOLF)
Other - ECG monitor
- irregular heart rate detection
- low or high heart rate alerts
- fall detection
Clock, auto sleep detection, silent wake alarm, auto exercise recognition.Guided breathing, Female Health Tracking- gym workout tracking
- music control, find my phone, etc..
- Built in apps for running, golfing, cycling, swimming, snowboarding/skiing, paddle board, rowing, cardio, walking, strength training, rep counting, yoga, eliptical, stair-stepper and more.
Non-fitness functions 
Smartphone notificationsYesYesYesYes
On-board music storageYes (Stream Apple Music direct to watch)
Connected payYesYes (special edition)Yes
LTEYes
Links 
Affiliate link*AmazonAmazon | FitbitAmazon | FitbitAmazon
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So, if you want something discreet and simple, you’ll probably opt for the Alta HR. For a more feature-packed fitness tracking experience, the Charge 3 or Vivoactive 3 might fit the bill. Apple Watch Series 4 is the clear winner in the smartwatch category. None of these look quite right? No problem – there are hundreds more to choose from.

The interactive tool can be found on this page.

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