Would love to see an official google fit integration. Seems that none of the 3rd party stuff is working any more. Guess I should have looked before spending a few hours trying to make it work. Looks like there was interest in the last thread about it but it kind of went down the rabbit hole of making the HACS integrations work. Hoping to get something HA official that can be maintained.
I managed to get the one on HACS working by doing as someone suggested and changing timezone, restarting, then the auth request comes through and then you can set the timezone back.
Painful, but it does get it working.
Would totally prefer an official version. Given the plethora of Google APIs there should be far more official integrations.