Why does the Fitness app show less than Apple Health?

The Fitness app shows the “Move” ring, i.e. active energy only. Apple Health keeps resting energy separate. The total is the sum of both.

Where does the watch take the weight from?

From Health Details in the Watch app. A new weight entry in Apple Health is carried over – check it briefly after entering.

Is the value correct without an Apple Watch?

Without a watch the iPhone only estimates from steps. For the challenge you need a watch or band that measures heart rate.

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Enter your weight in Apple Health

Apple Watch calculates calories from the body data in the Watch app. Apple Health also keeps “Active Energy” and “Resting Energy” apart – for the challenge you need the sum of both.

By Thomas Freimoser · Updated: October 14, 2026

Menus change with app versions – if an item is named differently for you, look for “profile” or “body data”.

Enter weight and height

Open the Watch app
On the iPhone open the “Watch” app (not Health), tab “My Watch”, then “Health” and “Health Details”.
Change height and weight
Tap “Edit” top right, enter height and weight and save. These are the values the watch uses for its calorie estimate.
Weight history in Health
Alternatively in the Health app: “Browse” → “Body Measurements” → “Weight” → “Add Data”. A new entry also updates Health Details.

Find the day's total calories

Active Energy
Health app → “Browse” → “Activity” → “Active Energy”. Choose “D” for day at the top and move to the challenge day. This is the movement share (the “Move” ring in the Fitness app).
Resting Energy
Same path: “Browse” → “Activity” → “Resting Energy”. This is the resting metabolism the watch assumes for the day.
Add them up
Total = Active Energy + Resting Energy of the same day. That sum is what you enter when submitting.

Screenshot for the proof

Add both values to “Favorites” (star on each page). Active and Resting Energy then sit together on the “Summary” tab – one screenshot shows both.
Select the challenge day before the screenshot so the date is visible.
Note: the Fitness app shows active calories only. It is not enough as proof for the challenge.

What counts as proof

The screenshot must show the total energy of the challenge day – resting plus active – with the date visible. The value is read once by an AI model and never stored; the certificate follows.

Submit a result How we calculate

Common questions

Why does the Fitness app show less than Apple Health?: The Fitness app shows the “Move” ring, i.e. active energy only. Apple Health keeps resting energy separate. The total is the sum of both.
Where does the watch take the weight from?: From Health Details in the Watch app. A new weight entry in Apple Health is carried over – check it briefly after entering.
Is the value correct without an Apple Watch?: Without a watch the iPhone only estimates from steps. For the challenge you need a watch or band that measures heart rate.