Trendline is an iPhone app that reads Apple Health. This page is for owners of scales whose companion app has been discontinued or pulled from the App Store.
First, the thing nobody says plainly enough: losing an app you built a habit around is a real loss, and it wasn't your fault. You did the tracking. The company stopped holding up its end. What follows sorts the damage honestly — because the answer genuinely differs depending on where your readings were living when the lights went out.
Three situations. Don't let anyone blur them.
Situation A — your readings were already syncing to Apple Health. They are safe. Apple Health data lives on your iPhone (and in your encrypted iCloud backup), not on the vendor's servers — a dead company cannot reach into Health and take readings back. Open Health → Browse → Body Measurements → Weight and look (Apple's guide): if your history is there, it's yours, permanently, and any Health-reading app can pick it up and continue as if nothing happened. This is the rescue that actually works, and it works because it happened before the shutdown.
Situation B — you're starting from today. Your scale still measures; a dead app doesn't change the physics of a load cell. You can weigh every morning and add the reading to Apple Health by hand — a manual entry has identical standing to a synced one — or, where the community has found a compatible app for your hardware (see ABYON below), pair with that and let it write to Health going forward.
Situation C — your history is locked inside the dead vendor's app or cloud. This is the hard one, and we won't soften it: readings that only ever lived in a vendor's app or on its servers are not recoverable through Apple Health. Health can't read a defunct database; neither can we, and neither can anyone selling a miracle. If the vendor offered a data export while it was still alive, that was the moment — and if the servers are down, that window may already be closed. What you can do is stop the loss at today's date: your history from here forward can live somewhere no company can take with it when it goes.
Qardio: what a shutdown looks like
Qardio — maker of the QardioBase smart scale — went through bankruptcy, and its service died the way these services usually do: quietly and out of order. The app disappeared from the App Store in September 2024, briefly resurfacing under the name "Qardio Heart Health" (Apple Support Communities). By spring 2025, owners were reporting the app could no longer reach Qardio's servers at all, with the website down and support email bouncing, and the threads were still collecting new reports into the summer (Apple Support Communities; Technodabbler's account). There was no clear shutdown announcement to act on — owners found out by stepping on the scale.
Where that leaves QardioBase owners: the scale still displays weight locally (Technodabbler), so Situation B is fully open. Owners whose Qardio app had been writing to Apple Health are in Situation A — that history is on their iPhones and readable today. History that lived only in Qardio's cloud is Situation C: while the app still functioned, owners in the community threads discussed exporting measurement history through its share feature (same thread) — past tense, and with the servers unreachable we make no promises about that route now.
ABYON: the app that vanished mid-habit
ABYON scale owners discovered their app gone from the App Store around the end of 2024 — installed copies stopped opening, the company's web presence went dark, and one owner in the community thread describes nearly five years of readings locked inside the dead app (Apple Support Communities). The thread is worth reading in full if this is you, because its news is genuinely mixed and genuinely useful:
- The hardware is not orphaned. Multiple owners confirm ABYON scales pair with Feelfit, a Qingniu-lineage app that's still maintained — details on our Feelfit page — and that pairing brings Apple Health sync with it going forward.
- The old history mostly is. The thread reports the original ABYON app lacked Apple Health integration, which is why so many owners are in Situation C: the readings lived only in the app, and Feelfit does not import them. New readings start from the day you pair.
That gap in the record stings. It's also the last one: readings written to Apple Health from here on can't be taken away by the next shutdown.
Healthkeep: the scale outlived its own brand's app
Healthkeep scale owners are in the gentlest version of this story: the hardware works today through Fitdays, the white-label app Healthkeep's own product pages direct buyers to, which writes to Apple Health (Healthkeep product page). Setup, sync limits, and fixes are on our Fitdays page. If a Healthkeep-branded app you once used is no longer findable, the Fitdays path is the one the vendor documents now.
Starting this week, shutdown-proof
Whichever situation you're in, the way forward is the same three moves:
- Check Health first. Health → Browse → Body Measurements → Weight. You may be pleasantly surprised by what synced before the end.
- Keep weighing. Pair with a documented compatible app where one exists, or enter readings by hand — either way, the destination is Apple Health, which no vendor can shut down.
- Pick apps by their exit. Before trusting any new scale app, check that it writes to Apple Health. The one lesson these shutdowns teach is that the app is temporary and the record shouldn't be — the fuller argument is here.
When Trendline launches, it will read the weight, body-fat, and lean-mass history already in your Apple Health — including everything a discontinued app managed to write before it went — and it will accept manual entries directly, so a scale with no app at all can still feed a careful trend.
Try the idea
If some of your history survived — in Health, in an old export, even in a notebook — paste a few weeks of it into the free weight trend calculator. It runs in your browser, nothing uploads, and it shows the raw weigh-ins against a deliberately slower signal. The bounce in the raw line is variation; the slower line is what your record was always trying to tell you.
Sources
- Technodabbler: what happened to Qardio (shutdown timeline, local weighing still works)
- Apple Support Communities: Qardio app can't reach servers (2025)
- Apple Support Communities: Qardio app missing from the App Store (2024; export-while-you-can discussion)
- Apple Support Communities: ABYON app gone; Feelfit pairing; ~5 years of data locked
- Healthkeep product page (Fitdays is the documented app)
- Apple: view your health data on iPhone
Trendline is not affiliated with or endorsed by Qardio, ABYON, Healthkeep, Feelfit, Fitdays, or any vendor named on this page. Vendor and service status change; everything above was verified against the linked pages on July 20, 2026.