Articles on: Exercise & Sleep Tracking
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How to connect to and sync with Apple Health - iOS

Connect to Apple Health in order to sync your exercise data to Lifesum and your nutrition data to Apple Health. 


How can I connect Apple Health to Lifesum?


  1. Please go to the Diary/Progress tab.
  2. Go to your Profile in the top right corner.
  3. Go to Settings in the top right corner.
  4. Go to Automatic Tracking.
  5. Press Activate on the top option.


You will then be directed to Health where you have to confirm the connection by pressing " Activate" again. 


Below the Activation button you will find the options to export:


  • Import your weight (From the Health app).
  • Export your health data, meaning nutritional data (From Lifesum to the Health app).

What data is transferred between Lifesum and Apple Health?

This is the data we export/import:


Export:   

  • Food calories
  • Food nutrition
  • Weight
  • Water intake


Import: 

  • Exercise calories
  • Steps
  • Active Calories
  • Exercise Time
  • Workouts
  • Weight


Note that the data that is imported/exported is based on what you have allowed when setting up the connection.

I am having issues with the connection, what can I do?


If you are experiencing issues with the sync to or from Apple Health, start with these general steps:


  1. Make sure that the Health App is updated to the latest version.
  2. Make sure that Lifesum is updated to the latest version.
  3. Disconnect Health from Lifesum under Automatic Tracking.
  4. Make sure that you have allowed Lifesum to read/write the necessary data. You can do this by:
  • Opening the Health app.
  • Go to your Profile.
  • Go to Apps under Privacy.
  • Press Lifesum in the list of apps.
  • Review the list of data.
  1. Connect Health to Lifesum again by pressing Activate.


If the general steps above do not resolve the issue, check whether it matches one of the specific patterns below, as these need a different fix.


Historical calories disappearing from Apple Health after viewing old diary dates


If calories or macros that were previously synced to Apple Health disappear after navigating to a historical date in the Lifesum calendar, this is a known technical issue with how Lifesum re-syncs older dates. Reconnecting Automatic Tracking will not fix it. Advise against navigating to historical dates in the diary calendar until a fix is released.


Sleep data missing from Apple Health


If sleep data specifically is not appearing, this is usually because the sleep permission was never requested after a reinstall or phone reset, rather than being turned off. Try in this order:


  1. Go to the Progress tab > Nutrition & Sleep, and tap the Sleep section to trigger a new permission request.
  2. If that doesn't work, go to Settings > Automatic Tracking > Deactivate, then Activate again. Scroll down on the Apple Health permission screen and make sure Sleep is enabled before confirming.
  3. If both steps above fail, delete the app completely and reinstall it. This forces a fresh permission request from Apple Health, including Sleep.


Data disappeared after logging out


Logging out of Lifesum can remove previously synced Apple Health data. Advise staying logged in rather than logging out as a troubleshooting step.


Workout or step calories missing, doubled, or not matching what a wearable shows


If a wearable (Apple Watch, Garmin, or another connected device) is involved, check the following before assuming a general sync fault:


  • Automatic Tracking only supports one active source at a time. If more than one health app is connected (for example Apple Health and a wearable's own app), this can cause duplicated or conflicting values. Make sure only one source is active under Automatic Tracking.
  • If Apple Watch workouts are not reflected correctly, or the same workout appears to be counted twice, the fix is on the Apple Health side, not in Lifesum: go to the Health app > Profile > Apps > Lifesum > Allow Lifesum to Read Data, and disable Active Energy, Workouts, and Workout Exercises there. Then log workouts manually in Lifesum going forward.
  • If step calories seem to disappear on days when a workout was logged, this is a known issue currently being investigated. Workaround: manually add the missing calories as a custom exercise entry.


Meal times shown incorrectly after syncing


If meal times in Apple Health look off, note that Lifesum writes the time of the last sync, not the individual time each meal was logged. This is expected behavior and not a fault in the connection.

Updated on: 09/07/2026

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