Apple Watch Series 3 vs. Fitbit Alta vs. Fitbit Ionic vs. Fitbit Flex vs. HTC re Grip

 
Watch Series 3
Alta
Ionic
Flex
re Grip
 AppleWatch Series 3Remove Buy NowFitbitAltaRemove Buy NowFitbitIonicRemove Buy NowFitbitFlexRemove Buy NowHTCre GripRemove Buy Now

Basic Info

Suggested Price$329$130$299$100$199
Release20172016201720132020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours5 days4+ days5 days5 hours to 2.5 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312n/a348x250NA160 x 32
Size1.5 inches or 1.65 inchesn/a1.42NA1.8 inches
Touchn/aNA
TypeAMOLEDOLEDOLEDLEDPMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMn/a50m1 ATMIP57

Notifications

Phone
Emailsn/a
Texts

Software

Operating SystemWatchOS 4n/aFitbit OSNANA
Apps
Music

All Wearables