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Open-Source Release

The Balance Toolkit is now available

The Balance Toolkit is a free, fully open-source (MIT) framework that turns an inexpensive Wii Balance Board into both a research-grade posturography instrument and a game-ready input device. It pairs the board over Bluetooth and computes center-of-pressure and stability metrics in real time, streaming the results to Python and Unity. No proprietary platform, no $10,000 force plate. Everything below is ready to download and use today.

Get it on GitHub Windows app Android APK Read the paper
What's included
Download & access
Repository root
All apps, samples & downloads in one place
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Windows executable
Pre-built desktop app, download & run
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Android APK
Companion app for phones & tablets
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Unity sample project
Drive game objects from live balance data
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Python integration
TCP & LSL scripts for data pipelines
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Desktop source code
React + Tauri/Rust implementation
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Android source code
Full companion-app source
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Requirements dataset
Anonymized co-design survey data
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Walkthrough
Screenshots
The Balance Toolkit Session screen with a data-flow diagram and a live dashboard showing center-of-pressure trajectory, stability, force, FFT spectrum, and dynamic stability metrics.
Live session. Pick a board, user, and activity, then watch real-time center-of-pressure, stability, FFT, and dynamic-stability (DPSI) metrics while the app simultaneously logs to CSV and streams over LSL/TCP to Python and Unity.
The Activities screen showing six posturography templates: eyes open-close, functional reach test, single leg stance, tandem stance, timed up and go, and squat.
Activity templates. Six ready-to-run posturography protocols, including single-leg stance, tandem stance, Functional Reach, Timed Up and Go, and squat.
The Devices screen showing two Wii Balance Boards connected simultaneously over Bluetooth, with connect and disconnect controls.
Dual-board & pairing. The app manages Bluetooth pairing for you and supports two boards at once for bilateral assessment or multiplayer play.
The Replay screen re-visualizing a saved balance session with center-of-pressure trajectory, FFT spectrum, and stability metrics.
Replay. Re-open any saved session to re-visualize center-of-pressure, stability, and spectral metrics after the fact.
Unity editor showing an avatar performing balance poses on a virtual board, driven by live center-of-pressure data streamed from the toolkit.
Unity integration. Physical weight-shifting drives an avatar in real time, a starting point for exergames, VR locomotion, and adaptive-difficulty mechanics.
The Android companion app showing live center-of-pressure visualization, stability metrics, and CoP trajectories on a phone.
Android companion. Collect and visualize live balance data on a phone or tablet, untethered from the desktop.
The Balance Toolkit is released under the MIT license and welcomes issues and pull requests. If you use it in your research, please cite the paper: The Balance Toolkit (CHI PLAY 2026) · DOI 10.1145/3831299.
Building something with balance boards? I'd love to hear about it. Reach out on LinkedIn or .