Apple Watch’s Readiness app turns recent activity, overnight vitals and sleep data into a 0–10 daily score. It is available to people aged 13 or older who use Apple Watch Series 12 or Apple Watch Ultra 4. Set up your health and sleep data, wear the watch overnight for at least seven nights, then open Readiness on the watch to see your score and what is influencing it.
Which Apple Watch models support Readiness?
Apple lists Apple Watch Series 12 and Apple Watch Ultra 4 as compatible. The feature is for users aged 13 and older. If you have a different watch model, Apple’s current support information does not list it as eligible for this app.
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Readiness is designed to help you understand your capacity for the day. It is not a medical assessment or a guarantee that a particular workout is safe.
Set up Readiness and get your first score
- Add your Health Details: On your iPhone, open Fitness and enter your age, height and weight.
- Set up Activity: Complete the Activity setup in Fitness if you have not already done so.
- Set up sleep tracking: Configure Sleep and enable Overnight Vitals so the watch can collect data while you sleep.
- Wear your supported watch to bed: Apple requires at least seven nights of overnight wear before Readiness can provide a score. Its troubleshooting guidance also specifies that you must have slept with the watch the previous night.
- Open Readiness: On Apple Watch, open the Readiness app. Tap Activity, Vitals or Sleep to inspect the information contributing to the score.
You can also view Readiness on iPhone: open Fitness, tap Readiness, and scroll toward the bottom of the screen if needed.
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- A FULL-FEATURED HEALTH TRACKER—Apple Watch Series 11 gives you invaluable insights about your body, right from your wrist. Take an ECG anytime* and get alerts for a high and low heart rate or an irregular rhythm*—so you can stay closer to your heart. You can also view your overnight health tracking metrics with the Vitals app* and be notified of possible sleep apnea.*
- KNOW YOUR SLEEP SCORE—With advanced sleep tracking, Series 11 gives you a daily sleep score. It’s an easy way to help measure and understand the quality of your sleep, so you can make it more restorative.
- GET HYPERTENSION NOTIFICATIONS—Did you know that Series 11 can spot signs of chronic high blood pressure? By analyzing how your blood vessels respond to beats of the heart, it can notify you of possible hypertension.*
- SAFETY FEATURES—A smartwatch that puts your safety first. Series 11 can detect a hard fall or severe car crash, automatically help connect you with emergency services, and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
- A POWERFUL FITNESS TRACKER—With advanced metrics and motivating features like Pacer, Heart Rate Zones, training load, and Workout Buddy powered by Apple Intelligence from your nearby iPhone*—Series 11 is made to help everyone stay active, from runners and hikers to strength-training enthusiasts.
What do the Readiness score and labels mean?
| Score | Apple’s label |
|---|---|
| 0–1 | Recover |
| 2–4 | Pace Yourself |
| 5–7 | Ready |
| 8–10 | Go For It |
Apple describes these bands as guidance about daily capacity. A “Go For It” result is not medical clearance, and a low result does not diagnose a health problem. The score does not account for every relevant factor, including existing conditions or medications. Consider how you feel and follow relevant advice from a health professional rather than using Readiness alone to decide whether or when to exercise.
What affects the score?
Activity
Readiness considers recent activity, including active calories, workout effort ratings and Training Load. Activity from the current day and recent history can affect the result. Apple says increased activity can lower the score, while steady or reduced activity can raise it.
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- A FULL-FEATURED HEALTH TRACKER—Apple Watch Series 11 gives you invaluable insights about your body, right from your wrist. Take an ECG anytime* and get alerts for a high and low heart rate or an irregular rhythm*—so you can stay closer to your heart. You can also view your overnight health tracking metrics with the Vitals app* and be notified of possible sleep apnea.*
- KNOW YOUR SLEEP SCORE—With advanced sleep tracking, Series 11 gives you a daily sleep score. It’s an easy way to help measure and understand the quality of your sleep, so you can make it more restorative.
- GET HYPERTENSION NOTIFICATIONS—Did you know that Series 11 can spot signs of chronic high blood pressure? By analyzing how your blood vessels respond to beats of the heart, it can notify you of possible hypertension.*
- SAFETY FEATURES—A smartwatch that puts your safety first. Series 11 can detect a hard fall or severe car crash, automatically help connect you with emergency services, and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
- A POWERFUL FITNESS TRACKER—With advanced metrics and motivating features like Pacer, Heart Rate Zones, training load, and Workout Buddy powered by Apple Intelligence from your nearby iPhone*—Series 11 is made to help everyone stay active, from runners and hikers to strength-training enthusiasts.
Vitals
The app considers overnight heart rate, respiratory rate, wrist temperature, heart rate variability (HRV) and blood oxygen, as well as heart rate measured during the day. It compares these readings with your recent baseline: metrics that are notably or slightly off can lower the score, while typical or favorable readings can raise it. Apple says the Vitals baseline requires sleep data from at least seven of the past 49 nights. Blood Oxygen availability can vary on certain Apple Watch models purchased in the United States.
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Recent sleep-score data, including the previous night and recent history, also contributes. Low or inconsistent sleep can reduce the score.
Rank #3
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- GET SMARTER HEALTH INSIGHTS—Apple Watch SE 3 is an advanced health tracker that helps you better understand your body. The smartwatch sends alerts for an irregular heart rhythm, or an unusually high or low heart rate.* You can view your overnight health tracking metrics with the Vitals app,* track your sleep score, and get sleep apnea notifications.*
- A GREAT FITNESS TRACKER—SE 3 can track your workouts in a healthy number of ways—from running and strength training to simply achieving your 10K steps a day. With real-time metrics and Workout Buddy powered by Apple Intelligence from your nearby iPhone,* you’ll hit your goals like never before.
- KEEP HELP CLOSE AT HAND—SE 3 is a smartwatch that can detect a hard fall or severe car crash and automatically help connect you to emergency services and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
- WOMEN’S HEALTH INSIGHTS—SE 3 has advanced sensors that track your wrist temperature while you sleep. With this smartwatch, you can log your periods and symptoms, get period predictions, and get notified of cycle deviations.*
- GREAT BATTERY LIFE AND FASTER CHARGING—Enjoy a smartwatch with all-day, 18-hour battery life* from sunup to sundown. Then charge up to twice as fast as SE 2* and get up to 8 hours of battery in just 15 minutes.*
Why is there no Readiness score?
Check Apple’s prerequisites one by one:
- Your Fitness Health Details include your age, height and weight.
- Activity is set up.
- Sleep tracking and Overnight Vitals are enabled.
- You wore a supported Apple Watch while sleeping for at least seven nights, including the previous night.
Apple’s Vitals baseline uses sleep data from at least seven of the past 49 nights. If a prerequisite is missing, complete it and continue wearing the watch overnight so it can collect the required data.
Why can the score change during the day?
Readiness updates as new data arrives. Apple identifies calories burned, naps and daytime heart rate as factors that can prompt updates; its announcement also gives an intense workout or a shift in daytime vitals as examples. Treat the displayed score as a changing snapshot rather than a fixed rating for the entire day.
Rank #4
![Apple Watch SE 3 [GPS 40mm] Smartwatch with Midnight Aluminum Case with Midnight Sport Band - S/M. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant](https://m.media-amazon.com/images/I/31Gq8SToFJL._SL160_.jpg)
- GET SMARTER HEALTH INSIGHTS—Apple Watch SE 3 is an advanced health tracker that helps you better understand your body. The smartwatch sends alerts for an irregular heart rhythm, or an unusually high or low heart rate.* You can view your overnight health tracking metrics with the Vitals app,* track your sleep score, and get sleep apnea notifications.*
- A GREAT FITNESS TRACKER—SE 3 can track your workouts in a healthy number of ways—from running and strength training to simply achieving your 10K steps a day. With real-time metrics and Workout Buddy powered by Apple Intelligence from your nearby iPhone,* you’ll hit your goals like never before.
- KEEP HELP CLOSE AT HAND—SE 3 is a smartwatch that can detect a hard fall or severe car crash and automatically help connect you to emergency services and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
- WOMEN’S HEALTH INSIGHTS—SE 3 has advanced sensors that track your wrist temperature while you sleep. With this smartwatch, you can log your periods and symptoms, get period predictions, and get notified of cycle deviations.*
- GREAT BATTERY LIFE AND FASTER CHARGING—Enjoy a smartwatch with all-day, 18-hour battery life* from sunup to sundown. Then charge up to twice as fast as SE 2* and get up to 8 hours of battery in just 15 minutes.*
What Apple says about how Readiness was developed
Apple says the Readiness algorithm was developed using data from the Apple Heart and Movement Study, in collaboration with Apple exercise scientists and physicians. Apple’s public materials do not provide an independent measured accuracy statistic or outcome result for the Readiness score itself. A separate Apple announcement reports a heart-rate sensor accuracy study with over 1,000 participants; that figure concerns sensor accuracy, not validation of the Readiness score.
Quick Recap
Best Value
![Apple Watch Series 11 [GPS 42mm] Smartwatch with Jet Black Aluminum Case with Black Sport Band - S/M. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant](https://m.media-amazon.com/images/I/41s72HIk5TL._SL160_.jpg)
- A FULL-FEATURED HEALTH TRACKER—Apple Watch Series 11 gives you invaluable insights about your body, right from your wrist. Take an ECG anytime* and get alerts for a high and low heart rate or an irregular rhythm*—so you can stay closer to your heart. You can also view your overnight health tracking metrics with the Vitals app* and be notified of possible sleep apnea.*
- KNOW YOUR SLEEP SCORE—With advanced sleep tracking, Series 11 gives you a daily sleep score. It’s an easy way to help measure and understand the quality of your sleep, so you can make it more restorative.
- GET HYPERTENSION NOTIFICATIONS—Did you know that Series 11 can spot signs of chronic high blood pressure? By analyzing how your blood vessels respond to beats of the heart, it can notify you of possible hypertension.*
- SAFETY FEATURES—A smartwatch that puts your safety first. Series 11 can detect a hard fall or severe car crash, automatically help connect you with emergency services, and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
- A POWERFUL FITNESS TRACKER—With advanced metrics and motivating features like Pacer, Heart Rate Zones, training load, and Workout Buddy powered by Apple Intelligence from your nearby iPhone*—Series 11 is made to help everyone stay active, from runners and hikers to strength-training enthusiasts.
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