TomTom Spark vs. Fitbit Flex 2 vs. Fitbit Flex vs. Polar A370 vs. Polar Loop

 
Spark
Flex 2
Flex
A370
Loop
 TomTomSparkRemove Buy NowFitbitFlex 2Remove Buy NowFitbitFlexRemove Buy NowPolarA370Remove Buy NowPolarLoopRemove Buy Now

Basic Info

Suggested Price$150$100$100$179.95$100
Release20152016201320172013

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heartn/a
Oxygen
Sleep
Steps
Swim

Battery

Durationn/a5 days5 daysUp to 3 days5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/aNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/an/a
Resolutionn/an/aNA160 x 80NA
Sizen/an/aNA1.18 inchesNA
Touchn/aNA
TypeLCDLEDLEDTFT LCDLED

Functions

Audio SpeakerBluetooth
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM1 ATMWR302 ATM

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating Systemn/an/aNANA
Apps
Music

All Wearables