Fitbit OS Simulator is a tool provided by Fitbit that allows developers to build, test, and preview applications and clock faces for Fitbit OS , the operating system used by Fitbit smartwatches. The simulator runs on Windows and macOS, and provides a virtual environment that emulates the features and functionality of a real Fitbit device. This allows developers to test their code without the need for a physical device, and to preview their work on a virtual watch face or app screen.
Publisher’s description
What is Fitbit OS Simulator?
Fitbit OS Simulator by Fitbit LLC is Windows software.
Installation and requirements
The publisher provides EXE (NSIS) installers for 32-bit Windows. A silent install is possible with the installer’s documented switches.
Pros / Cons
Pros
- Documented silent install
Cons
- No native ARM64 build
- 32-bit only
- No update for more than a year
In short: Fitbit OS Simulator is a Windows tool for 32-bit PCs. Updates have slowed down. Administrators can deploy it unattended.
Is Fitbit OS Simulator safe to download?
- The file is served by simulator-updates.fitbit.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
D7E45140C66031EB65586CFD393568ED46BF1286A2807CCE256F8F5CA2E79EAC· Open the VirusTotal report for this hash - The link answered when we last checked it (October 22, 2026)
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 1 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 0.9.4Latest | April 24, 2023 | — | 32-bit EXE (NSIS) |
Install from the command line
Silent install ›winget install --id Fitbit.FitbitOSSimulator -e"Fitbit OS Simulator-stable-0.9.4.exe" /SRelated guide: How to use winget: install and update apps
Also for other systems
brew install --cask fitbit-os-simulatorInformation
- Publisher
- Fitbit LLC
- Licence
- Fitbit
- Requires
- Windows 11 / 10
- Architecture
- 32-bit
- Installer
- EXE (NSIS)
- Version
- 0.9.4
- Released
- April 24, 2023
- Added to the catalogue
- April 24, 2023
- Versions listed
- 1
- Website
- dev.fitbit.com
- winget ID
- Fitbit.FitbitOSSimulator
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is Fitbit OS Simulator safe to download?
The download comes from simulator-updates.fitbit.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install Fitbit OS Simulator with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can Fitbit OS Simulator be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does Fitbit OS Simulator run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 32-bit version through emulation.