Activity tracker

fitness trackersmart bandfitness trackingactivity trackersactivity trackingfitness watchactivity monitoractivity/fitness trackerfitness bandfitness tracking devices
An activity tracker, also known as a fitness tracker, is a device or application for monitoring and tracking fitness-related metrics such as distance walked or run, calorie consumption, and in some cases heartbeat and quality of sleep.wikipedia
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Wearable computer

wearable computingwearableswearable
It is a type of wearable computer.
Alternatively they may be for specialized purposes such as fitness trackers.

Fitbit

Fitbit TrackerFitbit,
Early versions such as the original Fitbit (2009), were worn clipped to the waist; formats have since diversified to include wristbands and armbands (smart bands) and smaller devices that can be clipped wherever preferred.
Its products are activity trackers, wireless-enabled wearable technology devices that measure data such as the number of steps walked, heart rate, quality of sleep, steps climbed, and other personal metrics involved in fitness.

Nike+

Nike+iPod SupportNike+ for iPodNike+ GPS
Apple and Nike together developed the Nike+iPod, a sensor-equipped shoe that worked with an iPod Nano.
The Nike+iPod Sports Kit is an activity tracker device, developed by Nike, Inc., which measures and records the distance and pace of a walk or run.

Apple Watch

AppleApple Watch 2Apple Watch Edition
The Apple Watch and some other smart watches offer fitness tracker functions.
Apple Watch is a line of smartwatches designed, developed, and marketed by Apple Inc. It incorporates fitness tracking and health-oriented capabilities with integration with iOS and other Apple products and services.

Garmin

Garmin Ltd.Garmin CorporationGarmin Europe
In 2016, there were several advances made in regard to fitness tracking geared toward kids with a variety of options from organizations such as UNICEF and Garmin.
Due to their development in wearable technology, they have also been competing with activity tracker and smartwatch consumer developers such as Fitbit and Apple.

Heart rate monitor

heart monitorheart rate monitorsheart rate sensor
Wearable heart rate monitor s for athletes were available in 1981.
Activity tracker

Smartwatch

smart watchsmartwatcheswatch phone
The Apple Watch and some other smart watches offer fitness tracker functions. The term is now primarily used for smartwatches that are synced, in many cases wirelessly, to a computer or smartphone for long-term data tracking.
"Sport watch" functionality often includes activity tracker features (also known as "fitness tracker") as seen in GPS watches made for training, diving, and outdoor sports.

Jawbone (company)

JawboneAliphJawbone cellular phone accessories
In the US, BodyMedia has developed a disposable activity tracker to be worn for a week, which is aimed at medical and insurance providers and employers seeking to measure employees' fitness, and Jawbone's UP for Groups aggregates and anonymizes data from the company's wearable activity trackers and apps for employers.
Announced in November 2011, UP by Jawbone was introduced as the company’s first non-audio activity tracker.

Physical fitness

fitnessphysical trainingphysical
An activity tracker, also known as a fitness tracker, is a device or application for monitoring and tracking fitness-related metrics such as distance walked or run, calorie consumption, and in some cases heartbeat and quality of sleep.

Calorie

calorieskcalkilocalorie
An activity tracker, also known as a fitness tracker, is a device or application for monitoring and tracking fitness-related metrics such as distance walked or run, calorie consumption, and in some cases heartbeat and quality of sleep.

File synchronization

syncsynchronizationsynchronize
The term is now primarily used for smartwatches that are synced, in many cases wirelessly, to a computer or smartphone for long-term data tracking.

Smartphone

smartphonessmart phonesmart phones
The term is now primarily used for smartwatches that are synced, in many cases wirelessly, to a computer or smartphone for long-term data tracking.

Mobile app

appmobile applicationapps
There are also independent mobile and Facebook apps.

Facebook Platform

FacebookapplicationFacebook app
There are also independent mobile and Facebook apps.

President's Council on Sports, Fitness, and Nutrition

President's Council on Physical FitnessCouncil on Sports, Fitness & NutritionPresident's Award on Physical Fitness
The concept grew out of written logs that led to spreadsheet-style computer logs in which entries were made manually, such as that provided in the US by the President's Council on Physical Fitness and Sports as part of The President's Challenge.

The President's Challenge

President's ChallengePresidential Fitness TestPSA - The Presidential Sports Award
The concept grew out of written logs that led to spreadsheet-style computer logs in which entries were made manually, such as that provided in the US by the President's Council on Physical Fitness and Sports as part of The President's Challenge.

Cyclocomputer

bicycle computercyclometerbike computer
Early examples include wristwatch-sized bicycle computers that monitored speed, duration, distance, etc., available at least by the early 1990s.

Pedometer

step counternumber of steps takennumber of steps walked
Electronic activity trackers are fundamentally upgraded versions of pedometers; in addition to counting steps, they use accelerometers and altimeters to calculate mileage, graph overall physical activity, calculate calorie expenditure, and in some cases also monitor and graph heart rate and quality of sleep.

Accelerometer

accelerometersG-sensoracceleration sensor
Electronic activity trackers are fundamentally upgraded versions of pedometers; in addition to counting steps, they use accelerometers and altimeters to calculate mileage, graph overall physical activity, calculate calorie expenditure, and in some cases also monitor and graph heart rate and quality of sleep.

Altimeter

altimetrybarometric altimeterpressure altimeter
Electronic activity trackers are fundamentally upgraded versions of pedometers; in addition to counting steps, they use accelerometers and altimeters to calculate mileage, graph overall physical activity, calculate calorie expenditure, and in some cases also monitor and graph heart rate and quality of sleep.

Medical device

medical devicesmedical instrumentdevices
Some newer models approach the US definition of a Class II medical monitor, and some manufacturers hope to eventually make them capable of alerting to a medical problem, although FDA approval would be required.

Food and Drug Administration

FDAU.S. Food and Drug AdministrationUnited States Food and Drug Administration
Some newer models approach the US definition of a Class II medical monitor, and some manufacturers hope to eventually make them capable of alerting to a medical problem, although FDA approval would be required.

Apple Inc.

AppleApple ComputerApple Computer, Inc.
Apple and Nike together developed the Nike+iPod, a sensor-equipped shoe that worked with an iPod Nano.

Nike, Inc.

NikeNike Factory StoreNike Inc.
Apple and Nike together developed the Nike+iPod, a sensor-equipped shoe that worked with an iPod Nano.

IPod Nano

7th-Generation NanoiPod Nano 4th Generation3g Nano
Apple and Nike together developed the Nike+iPod, a sensor-equipped shoe that worked with an iPod Nano.