Electrocardiogram for Polar H10 heart rate sensor. ECG, heart rate and RR intervals. Live view and recording (also in background). Recordings can be opened later on. Website: https://www.ecglogger.com - View your current and earlier ECG, heart rate and R-R intervals in the same graph or individually - Explore your data by zooming and panning gestures - Record your data while also having a live preview - Lengthy recordings are automatically split into 1h files that enables very long recordings.