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Free guide · iPhone camera Zone 2 training builds your aerobic base and improves fat oxidation. Here's how to calculate your Zone 2 range and log every session using just your iPhone.
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Learn & Track — All in One Free App
Pulse Rate turns complex biometric concepts into simple daily habits. Measure, track, and understand your body using just your iPhone.
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Syncs with Apple Health. Instantly.
Import your workouts from Apple Health to combine activity history with camera-based readings. Every measurement syncs back to your health dashboard automatically.
How it works
Zone 2 = 60–70% of your maximum heart rate. A simple estimate: 220 minus your age. If you're 35, your max is ~185 bpm and your Zone 2 range is ~111–130 bpm.
Open Pulse Rate and take a resting measurement first thing in the morning. This baseline helps you track how your resting HR drops as your Zone 2 fitness improves over weeks.
After a Zone 2 session (easy run, bike, or walk), measure your heart rate with the camera immediately after. How quickly it drops is a reliable marker of aerobic efficiency.
Consistent Zone 2 training lowers resting heart rate over 6–12 weeks. Pulse Rate's trend charts let you visualize this progress clearly and stay motivated.
Free iOS Download
Your iPhone camera is all you need. No wearable, no subscription, no credit card. Just download and take your first reading in 60 seconds.
Download Free AppFor fitness and wellness purposes only. Not intended for medical diagnosis or treatment.