Discussion on "Fitbit, Google Health, and What's Next"

Erv Walter · 2026-07-23T19:31:54.533Z

If you use TrendWeight with a Fitbit account, there's a change coming that you should know about. tldr: Google is retiring the API that TrendWeight uses to read weight data from Fitbit, and once it's

Erv, Thanks for all you do. I have used Trendweight for 13 years. I don’t use a Fitbit anymore, but I use an Aria scale. Will this change affect me? Thanks again, John.

Yes, the Aria Scale is a Fitbit product so it will stop syncing sometime in September when Google turns the old API off.

Hi Erv. I just tried the manual entry. It defaulted to my last weight (242.5), but when I edited the date and body fat and tried to enter it, it failed, saying I needed to add my weight. Believe it or not, I'm exactly the same today (242.5) as I was on June 24. Numbers are funny. Can you please review that? Thanks. bp

I'll fix the UI. It doesn't default to anything, rather it shows you as a subtle reminder in the text box what your previous weight was (as a reminder), but you still have to type that number in there. I'll move that reminder out of the text box itself so that it doesn't seem like it's already filled out.

Thanks, Erv. For clarity, I did try to type it in again, but it wouldn't accept my input. It seemed to lock out the field. I'll try again. Thanks.

Thank you, Erv. Your tools have been a huge part of my weight loss journey. I look forward to manual entry to show my long-term progress.

Thanks for building TrendWeight, and for the communication about the changes. It's amazing to see a developer care so much a out the users of a hobby project!

I've been a TrendWeight user for over a decade, and it's been amazing for helping me improve my health.

here forever. Will connect the personal API and see what else AI can help do.

As far as I can tell, Fitbit has already stopped syncing new weight data to TrendWeight

For what it's worth, my weight synced fine from Fitbit 10 mins ago

Yeah, it's intermittently working it seems.

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Fitbit, Google Health, and What's Next

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