How can I migrate Google Fit activity data to Apple Health?

Question

Is there a first-party way of doing this? I exported all my data from Google using the Google Takeout interface, but this produced a zip file, which iOS cannot open. I also cannot install Google Fit on my iPhone to be able to import the data at the application level (it is not available in the Appstore).

How do I get the data into Apple Health?

Answer 1

You can't. Even with third party apps.

Answer 2

You could write an iOS app that could ingest the Google Fit data, then add it to HealthKit. It wouldn't be easy, but it would be possible.