Fitbit Ionic vs. Fitbit Alta HR vs. Garmin Vivosmart HR Plus vs. Polar A370 vs. Amazfit T-Rex

 
Ionic
Alta HR
Vivosmart HR Plus
A370
T-Rex
 FitbitIonicRemove Buy NowFitbitAlta HRRemove Buy NowGarminVivosmart HR PlusRemove Buy NowPolarA370Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$299$150$179$179.95$140
Release20172017201720172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ days7 days5 daysUp to 3 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250128 x 36160 x 68160 x 80360 x 360
Size1.421.4 inches0.5 inches x 0.8 inches1.18 inches1.3 inches
Touch
TypeOLEDOLEDLCDTFT LCDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50m5 ATMWR305 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemFitbit OSNABuild-in
Apps
Music

All Wearables