Fitbit Ionic vs. Fitbit Flex vs. Garmin Vivofit 4 vs. Amazfit GTS vs. HTC re Grip

 
Ionic
Flex
Vivofit 4
GTS
re Grip
 FitbitIonicRemove Buy NowFitbitFlexRemove Buy NowGarminVivofit 4Remove Buy NowAmazfitGTSRemove Buy NowHTCre GripRemove Buy Now

Basic Info

Suggested Price$299$100$79.95$150$199
Release20172013201820192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ days5 days1 year14 days5 hours to 2.5 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250NA88 x 88348 x 442160 x 32
Size1.42NANA1.65 inches1.8 inches
TouchNA
TypeOLEDLEDNAAMOLEDPMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50m1 ATM5 ATM5 ATMIP57

Notifications

Phone
Emails
Texts

Software

Operating SystemFitbit OSNAWear OSNA
Apps
Music

All Wearables