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To use Apple’s Readiness app, you need an Apple Watch Series 12 or Apple Watch Ultra 4 and must be at least 13. Add your age, height, and weight in the Fitness app on iPhone, set up Activity and Sleep with Overnight Vitals, then wear the watch while sleeping for at least seven nights. After setup, open Readiness on the watch to see your score and what is influencing it.
Check whether your Apple Watch supports Readiness
Apple says Readiness is available on Apple Watch Series 12 and Apple Watch Ultra 4 for users aged 13 and older. If you have another watch model, the app is not listed as supported in Apple’s current guidance.
Readiness uses sleep, activity, and health measurements to estimate your capacity for the day. It is a guidance feature, not a medical assessment or exercise-safety clearance. Apple Support
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Prepare your iPhone and watch
- On your iPhone, open the Fitness app and enter your age, height, and weight in your Health Details.
- Set up Activity in Fitness if you have not already done so.
- Set up Sleep and enable Overnight Vitals so the watch can collect measurements while you sleep.
- Wear the supported Apple Watch to bed for at least seven nights. Apple’s troubleshooting guidance also requires sleep data from the previous night before a score is available.
Apple describes a separate baseline requirement for Vitals: sleep data from at least seven of the past 49 nights. This is not the same wording as the initial seven-night setup period; the baseline depends on having enough recent overnight data.
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![Apple Watch Series 11 [GPS 46mm] Smartwatch with Jet Black Aluminum Case with Black Sport Band - M/L. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant](https://m.media-amazon.com/images/I/416RQ0rtsUL._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.
Find your score and inspect its factors
On Apple Watch
- Open the Readiness app.
- Review the score and its category.
- Tap Activity, Vitals, or Sleep to see the information affecting the result.
On iPhone
Open Fitness and tap Readiness. Apple notes that you may need to scroll to the bottom of the screen to find it.
Understand the score categories
Readiness uses a scale from 0 to 10. Apple groups the scores this way:
Rank #2
![Apple Watch Series 11 [GPS 42mm] Smartwatch with Rose Gold Aluminum Case with Light Blush Sport Band - S/M. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant](https://m.media-amazon.com/images/I/31caPPnRysL._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.
| Score | Apple category |
|---|---|
| 0–1 | Recover |
| 2–4 | Pace Yourself |
| 5–7 | Ready |
| 8–10 | Go For It |
The category is a summary of the inputs Apple uses, not a guarantee that a strenuous workout is appropriate for you. Your symptoms, health conditions, medications, and professional advice may matter more than the score.
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Activity
Readiness considers recent activity, including active calories, workout effort ratings, and Training Load. Activity from the current day and recent history can influence the score. Apple says increased activity can lower it, while steady or reduced activity can raise it.
Rank #3
![Apple Watch SE 3 [GPS 40mm] Smartwatch with Starlight Aluminum Case with Starlight Sport Band - S/M. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant](https://m.media-amazon.com/images/I/31YiTby0pOL._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.*
Vitals
Overnight measurements include heart rate, respiratory rate, wrist temperature, heart-rate variability (HRV), and blood oxygen, along with heart rate measured during the day. Apple compares these with your recent baseline: notably or slightly unusual readings can lower the score, while typical or favorable readings can raise it. Blood Oxygen availability varies for certain Apple Watch models purchased in the United States.
Sleep
Sleep input includes recent sleep-score data, including the previous night and recent history. Low or inconsistent sleep can lower Readiness.
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.*
Why a score can change during the day
Readiness updates as new information arrives. Apple identifies calories burned, naps, and daytime heart rate as factors that can affect updates; an intense workout or a shift in daytime vitals can also change the result.
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If you do not receive a score
Check each prerequisite rather than assuming the watch is unsupported or the app is malfunctioning:
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.
- Health Details in Fitness include your age, height, and weight.
- Activity is set up.
- Sleep is enabled and Overnight Vitals is configured.
- You have worn the watch to sleep for at least seven nights, including the previous night.
- There is sleep data on at least seven of the past 49 nights for the Vitals baseline.
If any item is missing, complete it and continue wearing the watch overnight so it can collect the needed data.
Use Readiness as context, not medical clearance
Apple cautions that Readiness does not account for every health factor, including existing conditions and medications, and says users should not rely on it alone to decide whether or when exercise is safe. Treat it as one signal alongside how you feel and any relevant guidance from a health professional.
Apple says the Readiness algorithm was developed using data from the Apple Heart and Movement Study with input from Apple exercise scientists and physicians. The company’s published materials do not establish an independent accuracy or health-outcome statistic for the Readiness score. A separate Apple heart-rate accuracy study involved over 1,000 participants, but that figure concerns sensor accuracy, not validation of Readiness scores. Apple Newsroom
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