How do i share Fitdays app info with my iphone health app

Hello JohnG21shillings,

Thank you for reaching out in Apple Support Communities. We understand you'd like to add your health data from a third party app to the Health app. We can help point you in the right direction.

To perform this task, you can follow these steps:

Share health and fitness data with apps and devices

You can give other apps permission to share health and fitness data with Health. For example, if you install a workout app, its exercise data can appear in Health. The workout app can also read and make use of data (such as your heart rate and weight) shared by other devices and apps. If you didn’t give an app permission to share data with Health when you set up the app, you can give permission later. You can also remove permission from an app.

To share your records from healthcare providers with apps, see Share your health records with other apps.

1. Tap your profile picture or initials at the top right.
2. If you don’t see your profile picture or initials, tap Summary or Browse at the bottom of the screen, then scroll to the top of the screen.
3. Below Privacy, tap Apps or Devices.
4. The screen lists the items that requested access to Health data.
5. To change the access for an item, tap it, then turn on or off permission to write data to—or read data from—Health.

This information is outlined in this helpful article and will get you on the right track: Share your data in Health on iPhone - Apple Support

Best regards.