Apple Watch Series 12 and Apple Watch Ultra 4 both add a Readiness app, and it answers with two things at once: a single score from 0 to 10, and one of four recommendations worded Recover, Pace Yourself, Ready or Go For It. Apple publishes the scale and it publishes the four words, and nothing that joins them together.
Apple says the score is built from recent activity, training load, vitals and sleep, that it arrives each morning and that it updates during the day. It does not say which number produces which of the four verdicts, and it does not say how the four inputs are weighted against each other.
Key facts
| Readiness, as Apple describes it | Detail |
|---|---|
| Score range | 0 to 10, one score a day |
| Recommendations | Recover, Pace Yourself, Ready, Go For It |
| Inputs Apple names | Recent activity, training load, vitals, sleep |
| When it appears | Each morning, updating during the day |
| Watches Apple names it on | Apple Watch Series 12, Apple Watch Ultra 4 |
| Score that triggers each recommendation | Not published |
| Weighting of the four inputs | Not published |
| Regulatory clearance | None claimed by Apple |
The four words, and what Apple attaches to them
The four recommendations are the part of Readiness most people will actually read, because they are written as plain instructions rather than as numbers. Apple publishes them as a set of four and describes none of them individually.
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The closest thing to an explanation of the purpose sits in Apple’s own announcement quote. Kaiann Drance, Apple’s vice president of Worldwide Apple Watch Product Marketing, said Series 12 “gives you meaningful insights, like readiness, so you can better understand how to take on your day and care for your health.” That describes the intent, not the method.
It is worth being precise about what the score is not. Apple claims no regulatory clearance for Readiness in any of its September 9 materials, and a low number paired with the word Recover is not a diagnosis of anything. Apple labels its Vitals app, which feeds the same picture, as being for wellness purposes only and not for medical use.
The 0 to 10 scale, line by line
Set out as a list of questions a reader would reasonably ask about a number between 0 and 10, Apple’s published material answers two of them and leaves the rest open.
| Question about the scale | What Apple publishes |
|---|---|
| Lowest and highest value | 0 and 10 |
| Number of recommendations | Four |
| Value that triggers each recommendation | Not published |
| Whole numbers or decimals | Not published |
| Whether scores are comparable between people | Not published |
| Days of data the first score needs | Not published |
| Whether the score appears without a recommendation | Not published |
| Whether the recommendation can be turned off | Not published |
Where the number turns up
On the watch, Apple lists Readiness as a new app on both the Series 12 and the Ultra 4 product pages. On iPhone, readiness is one of six summaries Apple names for the Insights tab in the redesigned Health app, alongside heart, sleep, fitness, vitals and cycle tracking.
Those two arrive on different schedules. watchOS 27 is free on Monday, September 14. The redesigned Health app is dated only later this year, starting in US English, and Apple says it needs an iPhone or iPad that supports Apple Intelligence.
What Apple has not said
- Which score, or range of scores, produces each of the four recommendations.
- How recent activity, training load, vitals and sleep are weighted inside the score.
- How many days or nights of wear the first Readiness score requires.
- Whether the score is reported in whole numbers or to a decimal place.
- Whether any Apple Watch other than Series 12 and Ultra 4 gets the Readiness app.
- Any accuracy figure, validation study or regulatory clearance for Readiness itself.
watchOS 27 arrives free on Monday, September 14, and Series 12 and Ultra 4 reach stores on Friday, September 18, so the first real scores land in the days after that. Apple usually posts its feature support documents alongside availability, and those pages are where any threshold or data requirement would appear. Our event recap and Series 12 preview cover the rest of the announcement.
