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JR101 Installation

How to connnect your JRUN to JACFIT app?

Step1. Turn on the Bluetooth.

Step2. Allow Jacfit to use your location and bluetooth as the first app-download.

Step3. Active the sensor you'll see the sensor name in the device list, choose the run type before you click "Connect".

White Bluetooth icon will become blue when it done correctly. (If not, pressing the white Bluetooth button to pair up.)

Step Calibration

Step 1.
Go app setting.
Step 2.
Choose step calibration.
Step 3.
Fill in your step length.


The average of walking step length is 0.414 of your height.

The average of running step length is 0.5 of your height.



What version of smart phone can support Jacfit app?

Android 8 later、iPhone 7 later

Why I can't connect Jr101 to Jacfit app?

Solution 1: Check the Bluetooth is turned on and allow Jacfit to use your location and bluetooth as the first download.

Solution 2: Check the settings on your phone, find the JACFIT app. Turn on Bluetooth and allow the location on your phone. Restart the app to connect again.

What type of battery can I put into the device

Battery type: CR2032
(lasts up to 180 hours)


How to Cast your screen to TV

  Use HDMI cable and adapter for your phone connecting cell screen to TV.

2. WI-FI
  a. IOS: Apple TV
      Use airplay mirroring smartphone screen to TV.

  b. Android: Chromecast
      Download the Google Home app, and connect to the same Wi-Fi as Chromecast then output your cell screen to TV.

Cast your screen to tv - ios version

Cast your screen to tv - Android version


Does Jacfit require to subscription?

No, JACFIT is free.
No monthly fee required.
App will constantly update more function and scenes.

How can I establish a friendship?

Where to find my workout data ?

Click Jacfit >> Profile icon
  Photo1 Profile
  Photo2 Total record
  Photo3 Each race record
  Photo4 Each roaming record

Once you finished the race, fitness data will automatically record in your profile. Reminder: if you didn’t finish the race, the data won’t be recorded.

Why my Roaming data didn't count in my records?

For roaming, you have to exercise over 10 minutes then the system will ask to record your data or not.

How can I chat with other players?


Email to your friend.
Click "Friends" icon.

Tournament & Party

1.Voice chat

1.Voice chat
You can chat with other people when you joined the tournament and party.
Some different ways that you can turn on the voice chat function.

Sent a message before the tournament or party start.

What's different between running、tournament and party?

Features Running Tournament Party

Cardio Workout

Run with random player

Run with your friends online

Training by yourself

Voice chat & Message

Player limit (8 people)

Reservation time

Kick out the person