Erv Walter (@ervwalter)

TrendWeight Has an API Now

TrendWeight has an API now. If you're comfortable writing a bit of code, you can pull your weight data out (including the calculated trend values you see on your dashboard) and push new weight reading

1Aug 25 · 6 min readewal.dev

Fitbit, Google Health, and What's Next

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

15Jul 23 · 5 min readewal.dev

New Auth, Legacy Data, New Options

Well, it’s been just shy of a week since the launch of the new version of TrendWeight. Early feedback was mostly positive and many small bugs were squashed in the first few days. There were also a couple larger improvements that just went live that a...

Jul 29, 2025 · 3 min readewal.dev

TrendWeight v2 Has Launched!

After more than a decade sitting mostly unchanged, TrendWeight has gotten a fresh update. While the app looks and works mostly the same way you're used to, everything under the hood has been modernized. What You Need to Know Logging In You'll need to...

5Jul 23, 2025 · 2 min readewal.dev

Rebooting TrendWeight (Again)

A while ago, I shared that I was going to rewrite TrendWeight from scratch (see Why Rebuild?). And then there was three years of radio silence on the project. The rewrite stalled at 70%—most of the interesting architecture was done, leaving authentic...

Jul 23, 2025 · 2 min readewal.dev

Erv Walter

About

Available for

Erv Walter's blogs

TrendWeight Has an API Now

Fitbit, Google Health, and What's Next

New Auth, Legacy Data, New Options

TrendWeight v2 Has Launched!

Rebooting TrendWeight (Again)

Erv Walter

About

Available for

Erv Walter's blogs

TrendWeight Has an API Now

Fitbit, Google Health, and What's Next

New Auth, Legacy Data, New Options

TrendWeight v2 Has Launched!

Rebooting TrendWeight (Again)

Erv Walter

About

Available for

Erv Walter's blogs

TrendWeight Has an API Now

Fitbit, Google Health, and What's Next

New Auth, Legacy Data, New Options

TrendWeight v2 Has Launched!

Rebooting TrendWeight (Again)

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Erv Walter

About

Available for

Erv Walter's blogs

TrendWeight Has an API Now

Fitbit, Google Health, and What's Next

New Auth, Legacy Data, New Options

TrendWeight v2 Has Launched!

Rebooting TrendWeight (Again)