Forum Posts

Fitbit dev tools are moving to Google Accounts

Hey Fitbit developers, Important update: To ensure you can continue to use dev.fitbit.com and keep your third-party apps for Fitbit devices running smoothly, you’ll need to transition your login to a Google Account. If you don’t make the move, you’ll...

Water Log get moved to previous date

I originally posted this in the Third‑Party Integrations forum — sorry for the cross‑post. Since it directly affects the API, I believe it’s also relevant here.When modifying water logs, the API shifts the date backward by one day.Here’s the link to ...

500 error on sleep list endpoint

When attempting to call the sleep list endpoint ("https://health.googleapis.com/v4/users/me/dataTypes/sleep/dataPoints"), I get a 500 internal server error. This occurs even when testing using the Google Health API parity tool. The "reconcile" endpoi...

Sleep Recommendation System into an application

Hi everyone! I’m currently working on my thesis about a sleep recommendation system designed to help users improve their sleep quality. I’m collecting feedback on the system and the app, so if you have a Fitbit Versa 2 and would be willing to help, I...

400 response when logging water

Our Fitbit integration has been in place for many years and we have never experienced issues with water logging.On March 3rd 2026 we started seeing a lot of 400 responses from requests to the log water endpoint, e.g.POST https://api.fitbit.com/1/user...

How do I create developer accounts for my team?

My company is developing an integration with Fitbit and I need to create accounts for my engineers.  We have Google Workspace accounts but it seems as though we cannot access the Fitbit development system using those accounts.  One of our engineers i...

RNHurt by Jogger
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Dissabled account

One of our study participants had her Fitbit account disabled for security reasons, as it was accessed from multiple locations. We attempted to request account recovery; however, the request was denied. Fitbit provided an option to download the user ...

Google account for Fitbit

Hi! We have several clinical studies utilizing Fitbit, each involving hundreds of patients. Many of our patients are seniors, and to ensure smooth account management, we usually set up Fitbit accounts for them before sending out the devices. However,...

Fitbit for Participants without Google Account

Dear all,Fitbit now requires a Google account for registration, which complicates our research process. We intended to create Fitbit accounts and provide them to participants, allowing us to monitor their sleep data and export it as needed. However, ...

Activity log data questions

I am using fitbit data processed by RADAR-base and have a couple of questions about the 'activity log' data type (RADAR-Schemas/commons/connector/fitbit/fitbit_activity_log_record.avsc at master · RADAR-base/RADAR-Schemas) that I was wondering if any...

app review

I have an app in waiting for review status for 4 weeks, and was wondering if there was an estimated time when there would be feedback from the review?  The app is called Meditation Time LoggerThanks much, Jordan Walter 

jordan-w by Recovery Runner
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API 500 error

Hello, We have recently starting receiving API 500 errors. API Error response : {"errors":[{"errorType":"request","fieldName":"500","message":"An error occurred with the Fitbit Web API while processing the request. Error id: 7378761704981933263"}],"s...

hi_SG by Base Runner
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api.fitbit.com timing out/ long response times

Hello,We are seeing timeouts/ long response times from api.fitbit.com since evening PST of 11/18/2025 with most the endpoints. Is there any issue going on and if so is there any ETA for resolution? Please find a couple of screenshots  below.  

fitbit_issue.jpg fitbit_trend.jpg

401-Unauthorized for OPTIONS request for sleep data

I've been working with the web api for the last couple of days. Sending requests using an http client (like insomnia) was fine, but from within a web based application, the request fails with a CORS error.Taking a look into the devtools showed an err...

L4zz3r by Jogger
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Demo Account Questions

Hello, I have a few questions about the demo accounts. 1. I am part of a multi-site research study where each site functions independently. When requesting accounts via Issue Tracker, should we submit a single request under the overall study, or can ...

Heart rate data

Hi,I am looking to do a project and would like to collect heart rate data for every half hour of the day on specific days. Is this possible? At the moment when i download the data it is a massive set of files with minute by minute data which is hard ...

Nesu by Jogger
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Repeated timestamps

We are trying to use fitbit data for a research project and have noticed something strange with the timestamps.We are often getting pairs or multiples of rows that are duplicates of each other (same time stamp and same values in all measurement and d...

Accept-Language Header is Recommended for API Calls

Previously, the inclusion of the Accept-Language header in API requests was considered optional, and our systems would typically default to a standard localization. However, with the changes introduced in v4.39, omitting this header could lead to you...

Fitbit Account -> Google Account: Changes in Fitbit API?

Hello,if I migrate my Fitbit account to a Google Account as requested by Fitbit, does the Fitbit API change? Especially the authentication procedure? I use the API for personal projects - do I have to adapt anything after the account migration?https:...

RN_ by Jogger
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Change of email address for research application

I am writing to request a change of the email address associated with the previously approved Research Application's OAuth 2.0 Client ID. This request is being made due to a change in the research personnel.Could you please confirm whether it is poss...

cifcif by Jogger
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