Apple Watch doesn’t have Body Battery. Here’s how to get one anyway.
Body Battery is Garmin’s feature, and there is no equivalent built into watchOS. Your Apple Watch already measures heart rate, heart rate variability, sleep and activity — it just never combines them into a single energy score. To see one, you need an app that reads Apple Health and computes the score itself.
Moodji does that. It turns the data your Apple Watch is already collecting into a Body & Mind Battery — one slot every 10 minutes, 144 a day, plus a named state for every hour — with no check-ins to fill in. Screen time feeds it too, which none of the hardware-based scores do, even though doom-scrolling drains you as surely as a workout.
Four ways to get an energy score — and what each one costs you
| Garmin | Whoop | Oura Ring | Apple Watch + Moodji | |
|---|---|---|---|---|
| What the score is called | Body Battery (0–100) | Recovery (0–100%) | Readiness Score | Body & Mind Battery + hourly state |
| What you have to buy | A Garmin watch | A Whoop band (no screen) | An Oura smart ring | The Apple Watch you already own |
| Subscription | Not required | Membership required | Membership required | Free to start; advanced features need membership |
| How often it updates | Continuously through the day | Recovery once each morning | Readiness once each morning | Every 10 minutes |
| Counts screen use | No | No | No | Yes — feeds battery and hourly state |
This table describes what each product does, not which is better; every one of them is good at what it was built for. Details can change as products update — last verified August 2026. Moodji is not affiliated with Garmin, Whoop or Oura.
Common questions
Does Apple Watch have Body Battery?
No. Body Battery is a Garmin feature built on Firstbeat analytics, and watchOS has no equivalent. Apple Watch records the underlying signals — heart rate, HRV, sleep, activity, and in newer versions Vitals and Training Load — but it does not merge them into one energy score. A third-party app has to do that.
What is the closest thing to Body Battery on iPhone?
An app that reads Apple Health and computes an energy score from it. That is what Moodji’s Body & Mind Battery is: the same class of measurement, built on the data your Apple Watch already collects, so you do not need to buy another device.
Do I need to log anything for it to work?
No. The battery is computed from data your watch collects passively. There is nothing to check in, rate or fill out — which matters, because check-in based mood apps are the ones people abandon after a few weeks.
Why does screen time affect my energy score?
Because mental load is load. Hardware energy scores only see physical strain and recovery, so an afternoon of anxious scrolling looks like rest to them. Moodji feeds screen time into both the battery and the hourly state — which is usually why your battery is low on a day you barely moved.
Does it work without an Apple Watch?
Partly. iPhone alone supplies steps, screen time and some activity data, so you still get a battery. But heart rate variability and sleep staging come from the Watch, and those are what make the score responsive rather than approximate.
Your Apple Watch is already collecting everything the score needs. It just isn’t showing it to you.
See how the Body & Mind Battery works →