Press Start to generate a random heart rhythm (30–200 BPM). Listen to the beeps and watch the heart animation, then pick your best guess with the slider and tap Check Answer.
- <60 BPM: bradycardic range
- 60–100 BPM: normal resting range
- >100 BPM: tachycardic range
Tap New Rhythm for another try. Audio unlocks on your first tap (iOS friendly).