Fitbit Ionic vs. Garmin Forerunner 235 vs. Garmin Vivosmart 4 vs. Amazfit GTS vs. HTC re Grip

 
Ionic
Forerunner 235
Vivosmart 4
GTS
re Grip
 FitbitIonicRemove Buy NowGarminForerunner 235Remove Buy NowGarminVivosmart 4Remove Buy NowAmazfitGTSRemove Buy NowHTCre GripRemove Buy Now

Basic Info

Suggested Price$299$299.99$130$150$199
Release20172017201820192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ days9 days7 days14 days5 hours to 2.5 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250215 x 18048 x 128348 x 442160 x 32
Size1.421.23 inches0.74 inches1.65 inches1.8 inches
Touch
TypeOLEDMIPOLEDAMOLEDPMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50m5 ATM5 ATM5 ATMIP57

Notifications

Phone
Emails
Texts

Software

Operating SystemFitbit OSWear OSNA
Apps
Music

All Wearables