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Dev tools · March 25, 2025

Open-source Android app to record raw data from Polar devices

There seemed to be no open source app yet to record raw biosignals from polar devices, so I build one. It’s aimed at researchers, developers, and anyone interested in working with raw biometric signals. Would love any feedback!

Open-source Android app to record raw data from Polar devices launched on March 25, 2025 with 5 votes and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.

What it does

Contribute to Boelensman1/PolarRecorder development by creating an account on GitHub.

Polar Recorder is an open-source application designed for researchers, developers, and enthusiasts who need to capture raw biometric signals from Polar devices. It provides a simple way to record, store, and stream physiological data. Polar Recorder is available on the Play Store . You can also download the APK directly from the Releases section and install it manually on your device. The app supports data streaming from Polar watches, however, specific setup steps are required. See the official Polar documentation for step-by-step setup instructions. The code_examples/ directory contains sample code for processing recorded data in Python and R. More examples will be added over time,…from github.com

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