'Cardiogram' App Update Brings Native Apple Watch Support, 3D Touch, and More

HealthKit-enabled Apple Watch app Cardiogram has received its 1.0 release, bringing native watchOS 2 compatibility, 3D Touch for supporting devices, and a redesigned interface.

The app has been developed in collaboration with researchers at the University of California San Francisco's Health eHeart study, which aims to help end heart disease. The program wants to develop a way to detect atrial fibrillation – a medical condition that can lead to stroke – using innovations in everyday consumer technology.

17155-14373-160609-Cardiogram-l

By that token, the Cardiogram developer team have been refining an algorithm that attempts to detect abnormal heart rhythms using the Apple Watch's heart rate sensors.

The 1.0 version of the app at the center of its efforts brings that goal a step closer, introducing native watchOS 2 support that enables users to track and view recorded heart rate data without having to tether their iPhone. A new Apple Watch complication also allows users to quickly view their latest heart-rate readings.

Meanwhile, the iPhone companion app now includes comprehensive activity statistics and trending HRM data, along with a Metrics screen that brings together users' move, stand, and exercise goals.

In addition, iPhone 6s and 6s Plus device owners can use 3D Touch gestures to tag peaks in heart rate, while social media sharing and interface tweaks make up the rest of the update.

Anyone with an Apple Watch can take part in the eHeart study, since the algorithm learns from its users, whether or not they have preexisting heart conditions.

Apple's HealthKit framework debuted in 2014, allowing developers to build health monitoring software that integrates with Apple's Health app, while Apple's open source framework ResearchKit was made available to developers in April 2015, enabling them to create their own iPhone apps for medical research purposes.

Apple itself continues to have significant interest in making its Apple Watch part-medical health instrument. An Apple patent application recently came to light, titled "Care event detection and alerts", which envisions a hardware system with the ability to monitor the surrounding environment for events that would require assistance from medical professionals, police, fire rescue or other emergency services.

Cardiogram is a free download for iPhone on the App Store. [Direct Link]

Related Roundup: Apple Watch 11
Buyer's Guide: Apple Watch (Buy Now)

Popular Stories

iOS 26

15 New Things Your iPhone Can Do in iOS 26.2

Friday December 5, 2025 9:40 am PST by
Apple is about to release iOS 26.2, the second major point update for iPhones since iOS 26 was rolled out in September, and there are at least 15 notable changes and improvements worth checking out. We've rounded them up below. Apple is expected to roll out iOS 26.2 to compatible devices sometime between December 8 and December 16. When the update drops, you can check Apple's servers for the ...
iPhone 14 Pro Dynamic Island

iPhone 18 Pro Leak Adds New Evidence for Under-Display Face ID

Monday December 8, 2025 4:54 am PST by
Apple is actively testing under-screen Face ID for next year's iPhone 18 Pro models using a special "spliced micro-transparent glass" window built into the display, claims a Chinese leaker. According to "Smart Pikachu," a Weibo account that has previously shared accurate supply-chain details on Chinese Android hardware, Apple is testing the special glass as a way to let the TrueDepth...
iOS 26

Apple Seeds Second iOS 26.2 Release Candidate to Developers and Public Beta Testers

Monday December 8, 2025 10:18 am PST by
Apple today seeded the second release candidate version of iOS 26.2 to developers and public beta testers, with the software coming one week after Apple seeded the first RC. The release candidate represents the final version iOS 26.2 that will be provided to the public if no further bugs are found. Registered developers and public beta testers can download the betas from the Settings app on...
iPhone 17 Pro Cosmic Orange

10 Reasons to Wait for Next Year's iPhone 18 Pro

Monday December 1, 2025 2:40 am PST by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models at the same time, which is why we often get rumored features months ahead of launch. The iPhone 18 series is no different, and we already have a good idea of what to expect for the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth...
Johny Srouji

Apple's Chipmaking Chief Johny Srouji Responds to Report About Him Potentially Leaving

Monday December 8, 2025 9:23 am PST by
Apple's chipmaking chief Johny Srouji has reportedly indicated that he plans to continue working for the company for the foreseeable future. "I love my team, and I love my job at Apple, and I don't plan on leaving anytime soon," said Srouji, in a memo obtained by Bloomberg's Mark Gurman. Here is Srouji's full memo, as shared by Bloomberg:I know you've been reading all kind of rumors and...
Johny Srouji

Apple Chip Chief Johny Srouji Could Be Next to Go as Exodus Continues

Sunday December 7, 2025 10:41 am PST by
Apple's senior vice president of hardware technologies Johny Srouji could be the next leading executive to leave the company amid an alarming exodus of leading employees, Bloomberg's Mark Gurman reports. Srouji apparently recently told CEO Tim Cook that he is "seriously considering leaving" in the near future. He intends to join another company if he departs. Srouji leads Apple's chip design ...
Foldable iPhone 2023 Feature 1

Apple to Make More Foldable iPhones Than Expected

Tuesday December 9, 2025 9:59 am PST by
Apple has ordered 22 million OLED panels from Samsung Display for the first foldable iPhone, signaling a significantly larger production target than the display industry had previously anticipated, ET News reports. In the now-seemingly deleted report, ET News claimed that Samsung plans to mass-produce 11 million inward-folding OLED displays for Apple next year, as well as 11 million...
Intel Inside iPhone Feature

Apple's Return to Intel Rumored to Extend to iPhone

Friday December 5, 2025 10:08 am PST by
Intel is expected to begin supplying some Mac and iPad chips in a few years, and the latest rumor claims the partnership might extend to the iPhone. In a research note with investment firm GF Securities this week, obtained by MacRumors, analyst Jeff Pu said he and his colleagues "now expect" Intel to reach a supply deal with Apple for at least some non-pro iPhone chips starting in 2028....
google pixel 10

Switching Between iPhone and Android Will Get Easier With New Apple and Google Collaboration

Monday December 8, 2025 11:10 am PST by
Apple and Google are teaming up to make it easier for users to switch between iPhone and Android smartphones, according to 9to5Google. There is a new Android Canary build available today that simplifies data transfer between two smartphones, and Apple is going to implement the functionality in an upcoming iOS 26 beta. Apple already has a Move to iOS app for transferring data from an Android...
Apple Fitness Plus expansion hero

Apple Fitness+ Coming to 28 New Regions With Digital Voice Dubbing

Monday December 8, 2025 6:19 am PST by
Apple today announced that Fitness+ is expanding to 28 new markets on December 15 in the service's largest international rollout since launch, accompanied by new language dubbing and a K-Pop music genre. Apple Fitness+ will become available in Chile, Hong Kong, India, the Netherlands, Singapore, Taiwan, and additional regions on December 15, with Japan scheduled to follow early next year....

Top Rated Comments

brandonballinger Avatar
124 months ago
At least it didn't say:

:eek:
Hey! I'm one of the Cardiogram developers. For all of you who had trouble registering, sorry about that—we had a big spike in server load overnight. I added more capacity, and am tuning the system now to make sure we can take the load as traffic comes in.
Score: 10 Votes (Like | Disagree)
Robert.Walter Avatar
124 months ago
I think also a lot of sporters are waiting for this.

I just bought a heart monitor/sensor from Wahoo (Tickr X) and it works perfect without having my iPhone nearby, it registrates every beat accurate. Never liked the whole concept of wearing my smartwatch during sports. And there's nothing more accurate like a chest belt monitor. So far for the heart rate functionality on a smartwatch for me... Maybe a standalone Apple Watch 2 will change my mind.
As I understand it, wOS 2 apps are supposed to run directly on the watch and independent of the phone.
[doublepost=1465472070][/doublepost]
App updates and Apple watch cases aren't worth the front page
Pro tip: to avoid such trivial triggering Apple-related news, please try androidrumors dot com.
Score: 8 Votes (Like | Disagree)
BrodieApple Avatar
124 months ago
App updates and Apple watch cases aren't worth the front page
Score: 3 Votes (Like | Disagree)
CarpalMac Avatar
124 months ago
This, coupled with enhanced sensors in the next gen watch (e.g. glucometer) could really make the watch a serious proposition. Ditch the fashion slant and instead go for health.
Score: 3 Votes (Like | Disagree)
syntax Avatar
124 months ago
App updates and Apple watch cases aren't worth the front page
This is a great app. I'm really glad it was brought to my attention.
Score: 3 Votes (Like | Disagree)
rigormortis Avatar
124 months ago
Cardiogram informed me last week I was in afib, I went to the doctor and had a 12 lead ecg. No new damage.
My pulse was really high.
Score: 1 Votes (Like | Disagree)