About ChatPPG
PPG education for
developers & researchers.
ChatPPG is a place to learn, investigate, and experiment with photoplethysmography: the optical sensing technique behind many of the wearables we use every day.
Learn PPG. Work with signals.
Developers, researchers, and students can move from a first explanation of PPG to signal processing, wearable datasets, and hands-on experiments. The library connects practical questions to methods and primary sources.
Health, accuracy and comparison pages are reviewed by Sameer Sontakey, Co-founder and Chief AI & Algorithms Officer at Sensor Bio. ChatPPG is independent and device-neutral; it is not a Sensor Bio product.
Articles provide a starting point for investigation. Follow the cited papers for study design, populations, devices, and limitations. A result from one setting does not automatically carry over to another.
Explore the libraryFrom understanding to experimentation.
Understand the fundamentals
Learn how tissue, light, and blood volume create the pulse waveform.
Start learningInvestigate the evidence
Browse models, datasets, and publications, with links back to their sources.
Open the atlasExperiment with signals
Explore a teaching simulator and an open-source phone-camera PPG library.
Meet the tools