RhythmDockPlayback and sound
Pause stops simulation time. Freeze holds the display while time continues. Sound is opt-in and represents electrical events, not a verified pulse.
GETTING STARTED
Your first rhythm, in minutes.
Open teaching view Start student practice
Teaching view hides the navigation and answer. Open instructor controls to choose the rhythm, then hide them before asking the class. Reveal the answer when ready. Controls and exported strips can disclose the rhythm; this is a presentation tool, not a secure exam mode.
Open the monitor
Launch the simulator and take the introduction. The default view is Lead II normal sinus rhythm.
Compare and measure
Choose a rhythm, adjust its rate and try the display speed and gain controls. Generate a 6- or 10-second strip, then use Measure strip to position the calipers.
Practice your recognition
Open Practice Mode or Game Mode. Submit your answer and read the identifying features. Progress history is optional and stored locally.
Save your work
Saved strips belong to this browser and address. Download PNGs or export a backup before changing browsers or clearing data.
Offline use
Open the simulator online first. After caching completes, the core app can work offline. Installation and audio behavior vary by device.