What is a Vitality Score?
A Vitality Score is a single number, from 0 to 100, that captures how your body is doing today. Instead of asking you to read a wall of separate charts — steps here, heart rate there, sleep somewhere else — it folds the metrics your Apple Watch already tracks into one figure you can glance at and understand. Health Genie builds this score for you every morning; this page lets you calculate it by hand from numbers you type in.
The key idea is that the score is relative to your own baseline. It answers "how am I doing versus my normal?" rather than ranking you against elite athletes. That is why sitting right at your usual step count and resting heart rate lands you near the top of the range, and why a poor night's sleep or an unusually low-movement day pulls the number down where you'll notice it.
How the Vitality Score is calculated
The score weights the three inputs your watch records automatically. Each input is compared to a baseline and expressed as a percentage, then blended:
| Metric | Weight (no sleep) | Weight (with sleep) | Direction |
|---|---|---|---|
| Steps | 55% | 45% | More is better |
| Resting heart rate | 45% | 35% | Lower is better |
| Sleep | — | 20% | Closer to target is better |
A few details keep the score honest. Steps are measured as today divided by your average, so beating your usual day raises the score — but the step trend is capped at 120% so one big walk cannot run the number away. Resting heart rate is inverted (your average divided by today), so a lower-than-usual reading scores higher, which matches how a rested, recovered body behaves. Sleep, when included, is measured against your target and capped at 110% so oversleeping doesn't over-inflate things. The weighted result is then clamped to the 0–100 range.
If you don't tell the calculator your personal baselines, it uses population averages — 7,500 steps, a 72 bpm resting heart rate, and 7.5 hours of sleep — so you can still get a meaningful score on your first try. Inside the app, Health Genie learns your real baselines from your history (a rolling 7-day step average and 60-day resting-heart-rate average), which makes the score sharper and truly personal over time.
What is a good Vitality Score?
Scores fall into three bands, shown as a colour on the ring:
| Score | Band | What it means |
|---|---|---|
| 70–100 | Great | At or above your baseline — a strong day for movement and recovery. |
| 40–69 | Fair | Somewhat below your normal — a common reading on a rest day or after short sleep. |
| 0–39 | Low | Well below your baseline — a prompt to take it easy, hydrate, and rest. |
Because the score is personal, a "Low" reading is a nudge, not a diagnosis. It often reflects a night of poor sleep, the early signs of a cold, or simply a deliberate rest day — all of which are normal parts of a healthy routine.
How to find these numbers on Apple Watch
- Steps: open the Health app, tap Browse, and search Steps for today's total.
- Resting heart rate: in Health, search Resting Heart Rate — Apple Watch calculates it in the background from quiet periods through the day.
- Sleep: if you wear your watch overnight, search Sleep for last night's hours.
Entering these by hand is a fine way to understand the score. To get it automatically — computed each morning from your real baselines, with a plain-English brief on what changed — Health Genie reads the same numbers straight from Apple Health.
Get your score automatically, every morning
Stop typing numbers. Health Genie reads your Apple Watch steps, resting heart rate, and sleep from Apple Health and builds your Vitality Score the moment you wake up — with a short AI brief on what moved it and one small thing to focus on today.
Download Health Genie FreeFrequently asked questions
What is a Vitality Score?
A Vitality Score is a single 0–100 number that sums up how your body is doing today, built from your Apple Watch steps, resting heart rate, and sleep. It compares today against your own recent baseline, so it reflects how you are doing relative to your normal rather than against everyone else.
How is the Vitality Score calculated?
Without sleep it is 55% steps and 45% resting heart rate; with sleep it becomes 45% steps, 35% resting heart rate, and 20% sleep. Each input is compared to your baseline as a percentage — more steps and a lower resting heart rate raise the score. Step and sleep trends are capped so one big day cannot inflate the number, and the result is clamped to 0–100.
What is a good Vitality Score?
70 and above is "Great", 40 to 69 is "Fair", and below 40 is "Low". Because the score is relative to your own baseline, sitting at your typical activity and resting heart rate lands you around 100. A lower score signals today is below your normal, not a medical problem.
Do I need an Apple Watch to get a Vitality Score?
This calculator works with any numbers you type in, so a watch is not required here. But the score is built around metrics an Apple Watch records automatically — steps, resting heart rate, and sleep — and Health Genie reads those from Apple Health to build your score every morning with no manual entry.
Why does an average day score around 100?
The score measures today against your own baseline, so being exactly at your usual step count and resting heart rate scores near the top. It is meant to answer "how am I doing versus my normal?" — beating your baseline holds you near 100, while a below-par day pulls the score down so you notice it.