Apple to Face Claims it Bars Third-Party Heart-Rate App Functionality on Apple Watch

Apple must face claims it illegally monopolized the U.S. market for heart-rate monitoring apps on Apple Watch, a California-based federal judge said on Monday.

Kardia Band apple watch
AliveCor, a company that that markets an ECG "KardiaBand" for the Apple Watch, filed an antitrust lawsuit against Apple in May 2021 accusing the Cupertino company of changing the heart-rate algorithm for the Apple Watch to gain an "unfair competitive edge" over rivals while endangering the lives of AliveCor users.

According to AliveCor, Apple's decision to exclude third-party heart-rate analysis providers from the Apple Watch has harmed AliveCor and impacted patients and consumers. To go along with the KardiaBand, AliveCor created the SmartRhythm app, which uses data from the Apple Watch's heart-rate algorithm to determine when a heart rate is irregular and suggest people take an ECG with the KardiaBand.

The KardiaBand received FDA approval in 2017, and in 2018, Apple debuted the Apple Watch Series 4 with built-in ECG capabilities and its own irregular heart rhythm notifications followed. AliveCor claims that Apple saw the success of the KardiaBand and changed the functionality of watchOS to sabotage KardiaBand and "corner the market for heart rate analysis on Apple Watch."

According to the latest report from Reuters, U.S. District Judge Jeffrey White said Monday that AliveCor could try to prove that Apple violated federal antitrust law based on its alleged "complete control" over the market for such apps.

"AliveCor alleges that Apple made changes to the heart rate algorithm that made it effectively impossible for third parties to inform a user when to take an ECG," or electrocardiogram, White wrote. "Plaintiff's allegations plausibly establish that Apple's conduct was anticompetitive."

However, White dismissed AliveCor's separate claim that Apple maintained an illegal monopoly over ECG-capable smart watches, because AliveCor's KardiaBand wristband "complements but does not compete" in that market, he said.

Apple and its lawyers have yet to respond to the judgement. AliveCor has previously filed several patent infringement lawsuits against Apple, alleging that Apple copied AliveCor's cardiological detection and analysis technology. Those lawsuits have not yet been resolved, while today's judgement allows AliveCor to seek damages and pursue the possibility of an injunction that would require Apple to cease its perceived monopolistic conduct.

Popular Stories

iOS 19 visionOS UI Elements

iOS 19 to Have Some of the 'Biggest' Design Changes in iPhone's History

Sunday March 16, 2025 10:35 am PDT by
Apple is planning some of the "biggest iOS and macOS redesigns in its history," according to Bloomberg's Mark Gurman. In his Power On newsletter today, Gurman reiterated that iOS 19 will have a visionOS-like design with more transparent interfaces:The new interfaces will adopt the design principles introduced in visionOS, the software for Apple's Vision Pro headset. That includes greater...
iphone 17 pro asherdipps

iPhone 17 Pro Max Rumors Allegedly Refer to 'iPhone 17 Ultra' Model

Friday March 14, 2025 7:56 am PDT by
If you've been following iPhone rumors over the last few years, you may remember reading reports that Apple flirted with the idea of introducing a super high-end "Ultra" model that would either replace its Pro Max device or sit above it in Apple's smartphone hirearchy. These reports appeared in the pre-launch iPhone 15 and iPhone 16 rumor cycles, but ultimately came to nothing. Now though, the...
Bent iPhone Air Feature

Apple Canned Larger iPhone 17 Air Model Over Fears of Bendgate 2.0

Monday March 17, 2025 4:07 am PDT by
Apple prototyped a larger ultra-slim iPhone 17 Air with a 6.9-inch display, but ultimately decided not to go ahead with the device because of fears that it could be susceptible to bending, according to a new report. Bloomberg reporter Mark Gurman, writing in his latest Power On newsletter: When it first started work on the phone, it prototyped a device with a 6.9-inch screen — matching...
iphone 16 pro models 1

Apple's First Foldable iPhone Estimated to Cost Nearly Twice as Much as iPhone 16 Pro Max

Monday March 17, 2025 6:42 am PDT by
In an investor research note today with British bank Barclays, analyst Tim Long said Apple's first foldable iPhone could have a starting price in the $2,300 range in the United States, which would make it by far the most expensive iPhone model ever. If the first foldable iPhone starts at $2,299, that means it would cost nearly twice as much as the iPhone 16 Pro Max, which starts at $1,199. ...
iphone 16 pro ghost hand

Next Year's iPhone 18 Pro Already Rumored to Have Five New Features

Tuesday March 18, 2025 1:00 pm PDT by
While the iPhone 18 Pro models are still around a year and a half away from launching, there are already some early rumors about the devices. Below, we recap some key iPhone 18 Pro rumors so far. Under-Screen Face ID In April 2023, display industry analyst Ross Young shared a roadmap showing that iPhone 17 Pro models would feature under-display Face ID. In May 2024, however, Young said ...
General iOS Mail Feature

iOS 18.3.2 Broke iCloud Mail Delivery

Monday March 17, 2025 3:31 pm PDT by
The iOS 18.3.2 update that Apple released last week appears to have broken iCloud Mail for some users. There are multiple complaints on Reddit and the MacRumors forums from users who say that iCloud Mail is not able to push new iCloud emails to their iPhones after the iOS 18.3.2 update. Affected users say that despite having the correct settings enabled, new iCloud emails are not showing up...
iphone 16 pro models 1

All Four iPhone 17 Models Rumored to Feature Upgraded 24-Megapixel Front Camera and More

Monday March 17, 2025 7:50 pm PDT by
All four iPhone 17 models launching later this year will feature an upgraded 24-megapixel front-facing camera, according to analyst Jeff Pu. In a research note today with investment firm GF Securities, Pu shared a chart in which he reiterated that the iPhone 17, iPhone 17 Air, iPhone 17 Pro, and iPhone 17 Pro Max will each be equipped with a 24-megapixel front camera. By comparison, all four ...
iPhone 17 Air Size Feature

'iPhone 17 Air' Rumored to Start at $899 With Surprisingly Good Battery Life, Camera Control, and More

Sunday March 16, 2025 9:05 am PDT by
Bloomberg's Mark Gurman today shared some new details about the rumored iPhone 17 Air. In his Power On newsletter, Gurman said he was told that the device may start at roughly $899 in the U.S., which means that it would occupy the same price point as the iPhone 16 Plus. This would make sense, as it has been widely rumored that the Air model will take over the Plus model's spot in the iPhone...

Top Rated Comments

RadioHedgeFund Avatar
39 months ago
In other news:

Shell have announced they are sueing Tesla for making their cars run on electricity, thereby cutting Petroleum companies off from the fuel market. A Shell press release stated, "By making their automobiles charge exclusively by electricity, often from their own charge points Tesla makes it impossible for Petroleum companies to access that marketplace, effectively monopolising the fuel marketplace."
Score: 41 Votes (Like | Disagree)
bartmoss Avatar
39 months ago
1. Create something. Doesn't matter what.
2. Sue Apple for any reason.
3. Hope Apple settles your nuisance lawsuit.
4. Profit
Score: 15 Votes (Like | Disagree)
PutTheFBackIn Avatar
39 months ago
I wonder if Apple’s legal team will wear Apple Watches to the hearings.
Score: 11 Votes (Like | Disagree)
SoldOnApple Avatar
39 months ago
I'm glad Facebook can't monitor for changes in my heart rate when I'm browsing posts.
Score: 10 Votes (Like | Disagree)
MauiPa Avatar
39 months ago
So, "you make a product, I have a fundamental right to use my product with yours" Does that some it up? Does alivecor allow Apple Watch and apple products on what it makes?

I wish someone would intelligently describe the reason why any manufacturers would be required to work with any other company's products, barring a contract of course. I mean I can clearly see the appeal of it, but the legal requirement? Does my Kindle have to work with other book stores? Can we sue TV manufacturers that don't allow Airplay and Google play and Roku streaming?
Score: 10 Votes (Like | Disagree)
LeeW Avatar
39 months ago
My only view on this is that it is an Apple device with its own specific monitoring system and software. Not really about a monopoly but holding Apple to account for their specific device/software. I would be wary about a 3rd party trying to use it.
Score: 8 Votes (Like | Disagree)