If your scale's manual or seller points you to Fitdays, the App Store listing says the app supports synchronization with Apple Health. Fitdays' privacy policy names weight, body fat percentage, BMI, and lean body mass as the data shared after each weighing. Nothing in the vendor's documentation says whether earlier readings transfer.
Trendline is an iPhone app that reads Apple Health. This page covers getting Fitdays readings into Health; why Health is the right destination at all is its own page.
If the scale on your bathroom floor says Posture, Healthkeep, Lepulse, or FITDAYS itself, and its manual or box points you to Fitdays, the app in your pocket is Fitdays. You searched for the scale brand; the software answer is the same for the brands below.
Which scales use this app
Fitdays is published by Guangdong Icomon Technology (App Store listing), . Several scale sellers point buyers to it, as their own pages show:
- Posture — the Amazon listing for this smart scale is titled "Posture Scale" and still carries the name Bveiugn in its address (Amazon listing), and the Fitdays site hosts the Posture scale's user manual (fitdays.app).
- Healthkeep — the company's own product pages tell buyers to download Fitdays and note it syncs with Apple Health and Google Fit (Healthkeep product page).
- Lepulse — Lepulse's setup guide begins with downloading Fitdays from the App Store (Lepulse: how to use the app).
This matters for one practical reason: for a scale whose manual or seller points you to Fitdays, the account model and Apple Health steps below come from the app, not the scale. Pairing and the measurements you get can still vary by scale model, and Fitdays' FAQ says to consult your model's manual.
Yes, it writes to Apple Health
The App Store listing states that when you weigh in with a connected scale, the measurement data "supports synchronization with Apple Health" (Fitdays on the App Store, checked October 18, 2026). Fitdays' privacy policy is specific about what is shared: weight, body fat, BMI, and lean body mass, after each weighing (Fitdays privacy policy). The vendor's sync guide also lists toggles for muscle mass, bone mass, and body water percentage (fitdays.org: connect Apple Health), but Apple Health has no data type for those, so the metrics that can actually land in Health are the four the policy names.
One boundary to set expectations correctly: the vendor says data syncs automatically after each measurement, and its guide mentions a "Sync Now" option, but nothing in its documentation says whether readings taken before you enabled the sync are transferred. We make no claim either way; check Health after enabling.
How to turn it on
Two documented paths, either works:
- From Fitdays: open the app, go to Me → Setting → Apple Health, toggle on the data types you want written, and grant the iOS permission sheet when it appears (vendor guide).
- From Apple Health: tap your profile button, then Apps, choose Fitdays, and turn on the categories you want (Apple's guide; Fitdays' own page still says Sources, which Apple's current guide does not use). You can review or revoke the same permissions any time under Settings → Health → Data Access & Devices (Apple's security guide).
One account, 24 people, one Health record
Fitdays is built around a shared family account: the vendor's FAQ documents up to 24 user profiles plus one "visitor" under a single login, with the visitor profile limited to weight, BMI, and body-fat display and unable to record data at all (Fitdays FAQ). Reviewers on the App Store listing describe how that model feels in a real household: family members sharing one account with no privacy between profiles, and one 2024 reviewer whose app locked onto a spouse's profile and wouldn't switch back (review themes on the listing, checked July 20, 2026). The same reviewer reported being unable to find any working customer-support channel.
Apple Health makes the sharp edge sharper: the Health store on an iPhone is that phone owner's record. The vendor's documentation does not say how — or whether — a shared account's other profiles reach Apple Health. The safe arrangement is the same one that works for every shared-account scale app: each adult runs the app on their own iPhone, so their weigh-ins write to their own Health record. Anyone whose readings can't make the trip can add a reading to Apple Health by hand — Apple Health keeps manual entries as their own source and, by default, ranks them above data from apps and Bluetooth devices.
On accounts generally, honesty about what we could and couldn't verify: the vendor's FAQ describes setup as registering an account by email, and a 2024 reviewer likewise describes being required to log in before using the app. Fitdays' privacy policy also names an Experience Mode and a Guest Mode, and says neither shares weight data with Apple Health. We found no documented account-free mode that does.
Fitdays not syncing to Apple Health?
The vendor's documented checklist is short (FAQ, sync guide):
- Finish the measurement. The vendor states data for the day appears only after a completed measurement — step on, wait for the composition cycle to end, and keep the app open while it happens. A long-running review theme echoes this: readings recorded only while the app was open during the weigh-in.
- Check the permission. Health → profile button → Apps → Fitdays (or Settings → Health → Data Access & Devices): confirm write access is on for the types you expect. The vendor's guide also suggests toggling sync off and on. Note that Experience Mode and Guest Mode do not share weight data with Apple Health.
- Check the network. The vendor's FAQ says the app needs a network to save your history records to its server, along with other operations such as login and pairing. It does not say the Apple Health write itself needs one.
- The vendor's help route is inside the app. The FAQ says Mine → Setting → Help; the current privacy policy instead points to Mine → Customer Service Center, so look for either.
Readings written to Apple Health are Health records with Fitdays as their source. You can delete them in Health, and Fitdays can delete samples it wrote while it keeps write permission, so check your history in Health after any reconnect.
What lands where
| What Fitdays writes to Apple Health | What Apple Health can store | What Trendline reads from Health |
|---|---|---|
| Weight, body fat %, BMI, and lean body mass per the privacy policy, after each weighing; the App Store listing says the data "supports synchronization with Apple Health" (October 2026) | 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. |
Trendline also accepts manual entries for the composition values Apple Health has no type for — the body water, muscle, and bone numbers that today live only inside Fitdays.
Try the idea
Once a few weeks of weigh-ins are flowing, the raw series will bounce — that's variation, not a defective scale. Paste your readings into the free weight trend calculator — it runs in your browser, nothing uploads — and compare the raw measurements against a deliberately slower signal. The direction underneath is the number worth watching.
Questions people ask
Which app does my Bveiugn, Healthkeep, or Lepulse scale use?
If the manual or seller points you to Fitdays, that is the app. Healthkeep's product pages tell buyers to download Fitdays, and Lepulse's setup guide begins with downloading Fitdays from the App Store.
Does Fitdays sync to Apple Health?
Yes. The App Store listing states that when you weigh in with a connected scale, the measurement data "supports synchronization with Apple Health", and Fitdays' privacy policy names weight, body fat percentage, BMI, and lean body mass as the data shared after each weighing.
How do I turn on Fitdays Apple Health sync?
In Fitdays, go to Me, Setting, Apple Health, toggle on the data types you want written, and grant the iOS permission sheet. Or, in the Health app, tap your profile button, then Apps, choose Fitdays, and turn on the categories you want.
Why isn't Fitdays syncing to Apple Health?
The vendor states data for the day appears only after a completed measurement, so step on, wait for the composition cycle to end, and keep the app open while it happens. Then check that write access is on for the types you expect, and that you have an internet connection; Fitdays says it needs a network to save history records to its server.
Can my family share one Fitdays account with Apple Health?
Fitdays' FAQ documents up to 24 user profiles plus one visitor under a single login, but the vendor's documentation does not say how, or whether, a shared account's other profiles reach Apple Health. The safe arrangement is for each adult to run the app on their own iPhone.
Sources
- Fitdays on the App Store (developer, Apple Health language, review themes)
- fitdays.org: how to connect Apple Health (enable path, data-type toggles)
- fitdays.app: how to connect Apple Health (Health-side path, post-measurement note)
- Fitdays FAQ (registration, 24-user account, visitor mode, troubleshooting)
- Healthkeep product page (directs buyers to Fitdays)
- Lepulse: how to use the app (directs buyers to Fitdays)
- Amazon: "Posture Scale" listing
- Fitdays privacy policy (HealthKit section, Experience and Guest modes, support route)
- Apple: manage Health data on your iPhone (app permissions, source priority)
- Apple: protecting access to Health data (Data Access & Devices)
Trendline is not affiliated with or endorsed by Guangdong Icomon Technology, Fitdays, or any scale brand named on this page. Vendor behaviors change; everything above was verified against the linked pages on July 20, 2026 and re-checked on October 18, 2026.