Pulse TrackerUnderstand your heart numbers
Short, practical explainers written to help you read your own measurements. Reviewed for accuracy against guidance from the American Heart Association and peer-reviewed sources.
Normal resting heart rate by age
Charts for adults, athletes, children and seniors, plus what a high or low reading means.
Read guide →Blood pressure chart explained
Normal, elevated, stage 1, stage 2 and crisis ranges, and how to measure properly at home.
Read guide →What is HRV and what is a good number?
Heart rate variability by age, why it changes, and how to improve it.
Read guide →How to measure heart rate on iPhone
Three ways to check your pulse with an iPhone, with and without an Apple Watch.
Read guide →Is a Resting Heart Rate of 100 Normal?
A resting heart rate of 100 BPM sits right at the top of the normal 60 to 100 range. Above it is tachycardia. What to check first and when to see a doctor.
Read guide →Is a Resting Heart Rate of 55 Good?
A resting heart rate of 55 BPM is below the textbook 60 to 100 range but is usually normal and a sign of good fitness. When 55 is fine and when it is not.
Read guide →Is a Resting Heart Rate of 90 Bad?
A resting heart rate of 90 BPM is inside the normal 60 to 100 range but on the high side. Common causes, how to recheck it, and when to talk to a doctor.
Read guide →Start tracking your heart today
Free to download on the App Store. Measure your first heart rate in under a minute, no wearable needed.
Download for iPhoneRequires iOS 17 or later · ★ 4.7 rating · Available in 8 languages