Learn how to set up and sync Ace, Ace 2, or Ace 3 for your child. If your child doesn't have a Fitbit device, use the Fitbit app on their phone to track their steps.
I'm setting up a kids tracker for the first time
Parents or guardians need:
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Your child's Ace tracker
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Google Account with:
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Fitbit profile in the Fitbit app
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Google family group where you're the family manager
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Phone or tablet to set up your child's Fitbit profile and Ace tracker:
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iPhone or iPad
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Android phone or tablet
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My child has their own phone or tablet
- Confirm that you are the family manager of a Google family group. For instructions on how to create a family on Google, see the Google for Families help center.
- Connect your child's Ace device to the charger before you begin the setup process.
- Download and install the Fitbit app from one of the following locations:
- Apple devices—Apple App Store
- Android devices—Google Play Store
- Tap Sign in with Google. Your child signs in with their Google Account. If your child doesn't have a Google Account, tap Create your account, and follow the on-screen instructions.
- Review the information about managing a child account on Fitbit.
- Tap Agree and continue, and enter the password for your Google Account.
- Add a Fitbit profile for your child.
- Tap Next.Your child can log in to their Fitbit profile.
- Tap Continue, and follow the on-screen instructions to pair Ace to your child's profile.
Note: Ace syncs every time your child opens the Fitbit app.
For more information on Google Accounts for children, see the Google for Families help article.
I'll use my phone or tablet
iPhone or iPad
- Confirm that you are the family manager of a Google family group. For instructions on how to create a family on Google, see the Google for Families help center.
- Connect your child's Ace device to the charger before you begin the setup process.
- Make sure you have a Fitbit profile. If not, download the Fitbit app
tap Sign in with Google
- In the Fitbit app, tap ‘You’ tab > 'Family' tile, and click on 'Add child'
- Review the information about managing a child account on Fitbit.
- Tap Agree and continue, and enter the password for your Google Account.
- Tap Continue, and follow the on-screen instructions to pair Ace.
Note: Ace syncs every time your child opens the Fitbit app.
Android phone or tablet
- Confirm that you are the family manager of a Google family group. For instructions on how to create a family on Google, see the Google for Families help center.
- Connect your child's Ace device to the charger before you begin the setup process.
- Make sure you have a Fitbit profile. If not, download the Fitbit app
tap Sign in with Google
To sync Ace, switch to your child's profile on your phone or tablet 
I'm already a main guardian in the Fitbit app
If you sign in to the Fitbit app with your Fitbit login, complete the steps below on the primary phone or tablet that your child will use with their tracker.
- With the tracker nearby, open the Fitbit app, and log in to your account.
- On the Today tab
, tap your profile picture. Tap Family.
- Tap Add Child Account.
- .When prompted, enter your Fitbit password. Follow the on-screen instructions to review the privacy notice.
- Enter your child's information for their account, and tap Next
- Confirm you want to connect the tracker to this device. Child view appears.
- Tap Set up.
- Continue to follow the on-screen instructions to set up your child's tracker.
, tap your profile picture. Tap Family.Why do I need to update the birthday for my child’s Google Account?
Some parents might have previously created a Google Account for their child with an adult’s date of birth due to past technical limitations. Going forward, children now need to use Fitbit with a Google Account birthday that matches their real date of birth.
To change your child’s birthday:
- Sign in to your child’s Google account.
- In a browser window, visit the Google Account Manager.
- Click Personal Info
- Update the birthday
Why can't I set up my Ace 3 in Quebec?
Fitbit began requiring new child accounts to be registered with Google in June 2023. At this time, child registration isn’t supported in Quebec.
If you aren’t able to set up Ace 3 in Quebec due to this change, you may be eligible for a refund. Return your device to the original retailer if your purchase was made within their return window. Otherwise, contact customer support at contact.fitbit.com.
Note: When you contact customer support, provide proof of purchase and your shipping address. If you’re eligible for a refund, you’ll be provided with a prepaid shipping label to return your device.