Fitbit Flex 2 vs. Fitbit Ionic vs. Apple Watch vs. Mobvoi TicWatch S2 vs. HTC re Grip

 
Flex 2
Ionic
Watch
TicWatch S2
re Grip
 FitbitFlex 2Remove Buy NowFitbitIonicRemove Buy NowAppleWatchRemove Buy NowMobvoiTicWatch S2Remove Buy NowHTCre GripRemove Buy Now

Basic Info

Suggested Price$100$299$349$180$199
Release20162017201520192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days4+ days18 hours2 DAYS5 hours to 2.5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNANA
MacNANA
WindowsNANA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a348x250340 x 272 or 390 x 312400 x 400160 x 32
Sizen/a1.421.5 inches or 1.65 inches1.39 inches1.8 inches
Touchn/a
TypeLEDOLEDAMOLEDOLEDPMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM50mIPX75 ATMIP57

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aFitbit OSWatch OSWear OSNA
Apps
Music

All Wearables