Trendline is an iPhone app that reads Apple Health. This page is deliberately date-stamped: everything below describes July 2026, because Google has publicly said the situation should change later this year.
Can a Fitbit Aria sync to Apple Health? (as of July 2026: not directly)
No native path exists. An Aria weigh-in travels from the scale to your Fitbit account, and Google's own help page for the Aria series describes exactly one destination — weigh yourself and sync with the Fitbit app to track your weight over time — with no mention of Apple Health anywhere on the page (Google's Fitbit scale help, checked July 2026). There is no toggle to flip, no permission sheet to grant. The readings are captured fine; they just have nowhere Apple-shaped to go.
This has been a sore point for years. The long-running request threads on Fitbit's own community forum now redirect to Google's support forum — the community itself was folded into Google's platform — where the complaints continue under new URLs, including owners reporting weight history going missing in the forced migration from the Fitbit app to the Google Health app (Google Health Community, 2026).
Google's stated plan — their words, their timeline
Google's FAQ on using Apple Health with the Google Health iOS app currently reads: "The Google Health app only reads data from Apple Health to consolidate your metrics. It does not write or export any of your data back to the Apple Health app yet," followed by: "Support for writing data back to Apple Health will be added later this year" (Google Health Help Center, checked July 2026; the gap between the app's onboarding copy and this FAQ was reported by PiunikaWeb in May 2026).
To be precise about whose promise that is: it's Google's, not ours. If it ships as described, Aria readings that reach your Fitbit account should finally be writable into Apple Health through the Google Health app. Until it ships, the routes below are what actually works.
The honest interim routes
- IFTTT (free tier available). A long-standing applet records every new weight logged by your Aria into the iOS Health app (the applet, live as of July 2026). It rides IFTTT's polling of the Fitbit API, so entries arrive on IFTTT's schedule, not at the moment you step off the scale.
- Paid bridge apps. Sync Solver, myFitnessSync, and SyncFit each log into your Fitbit account and write measurements — weight among them, and in several cases body fat percentage and BMI — into Apple Health. The shared caveat, stated by the apps themselves: because of Fitbit's third-party API limits, syncing is mostly on the order of once a day, and background reliability depends on the bridge and on iOS's scheduling.
- Historical import varies by bridge. myFitnessSync and SyncFit advertise full-history import from Fitbit; Sync Solver's documentation describes daily data. Whether your particular years of Aria weigh-ins make the trip intact is bridge-dependent — verify it against the app's current listing before relying on it.
The always-available fallback
An Aria is still a working instrument with a clear display. Read the number, then add the reading to Apple Health by hand — a manual entry is first-class in Health, with the same standing as anything a bridge writes. For a once-a-day weigh-in, this is the zero-dependency route that no API limit or app migration can break.
What lands where
| What Fitbit writes to Apple Health | What Apple Health can store | What Trendline reads from Health |
|---|---|---|
| Nothing natively, as of July 2026 (Google's help; Google's Apple Health FAQ). Bridges and IFTTT write weight — some also body fat % and BMI. | Weight, body fat %, lean body mass, BMI, height, waist circumference | Weight, body fat %, lean body mass — with height as context. BMI and waist are not imported. |
When Trendline launches, it will read whatever your chosen route lands in Apple Health — bridge, IFTTT, or hand-entered — and will also accept manual entries for composition values Health has no type for.
Try the idea
You don't need the plumbing solved to see what a trend view adds: export or copy a few weeks of weigh-ins from the Fitbit app and paste them into the free weight trend calculator. The slower signal drawn under the raw readings is the payoff all this syncing is for.
Sources
- Google: "How do I use my Fitbit scale?" (Aria series; no Apple Health path documented)
- Google Health Help Center: using Apple Health with the Google Health app (read-only today; write-back "later this year")
- PiunikaWeb (May 2026): Fitbit-to-Apple-Health write-back coming later in 2026
- Google Health Community: missing weight data after the forced Fitbit-app migration
- IFTTT: sync your Fitbit Aria weigh-ins to Health
- Sync Solver on the App Store · myFitnessSync · SyncFit on the App Store
Trendline is not affiliated with or endorsed by Google, Fitbit, IFTTT, or any bridge app named on this page. This situation is expected to change: everything above was verified against the linked pages on July 20, 2026, and this page will be rechecked when Google's write-back ships.