Apple has designed a new algorithm that Apple Watch uses to measure electrocardiogram (ECG) waves, according to developer documentation for the iOS 14.3 and watchOS 7.2 betas.
In the official documentation, a new "version 2 algorithm" declaration has been added. No other information is included.
The ECG feature includes irregular heart rhythm detection, which intermittently measures the user's heart rate in the background and sends a notification if it detects an anomaly it categorizes as atrial fibrillation, which can be a serious heart arrhythmia condition.
Based on beta code uncovered by MacRumors, it's likely that the new algorithm will allow the ECG app to check for atrial fibrillation (AFib) at higher heart rates - during exercise, for example.
iOS 14.3 will introduce support for Apple Fitness+, Apple's upcoming fitness service that will work with the Apple Watch, plus it brings a new Cardio Fitness feature that lets you know if your VO2Max levels are low. VO2Max is a useful measurement of overall fitness and heart health.
iOS 14.3 is set to be released on Monday, December 14, which is also the day that Apple Fitness+ is coming out.
Thursday January 9, 2025 5:45 am PST by Joe Rossignol
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices.
iPhone 17 Pro concept based on rumors
Below, we recap key changes rumored for the iPhone 17 Pro models as of January 2025:
More aluminum: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models ...
Sunday January 12, 2025 4:11 pm PST by Joe Rossignol
Bloomberg's Mark Gurman recently reported that Apple plans to release new HomePod mini and Apple TV models this year, and now he has provided a more precise timeframe.
In his Power On newsletter today, Gurman said Apple is currently aiming to launch the new HomePod mini and Apple TV models "toward the end of the year."
That timeframe suggests the devices will be released at some point...
Apple's slate of 2025 products look to be dominated by a large number of low-cost and entry-level devices. Here's what to expect.
With advancements like Apple Intelligence and all-new in-house chip designs, Apple is reportedly looking to enhance many of its budget-friendly offerings, ensuring they remain competitive in an increasingly crowded market. These updates also indicate a slight...
Friday January 10, 2025 3:14 am PST by Tim Hardwick
This year's iPhone 17 Pro models will feature a smaller main camera sensor than the one used in the Fusion camera currently found in iPhone 16 Pro models, according to Weibo-based leaker Digital Chat Station.
The Chinese leaker claims that Apple will adopt a 1/1.3" sensor for the 48MP main camera in the iPhone 17 Pro and iPhone 17 Pro Max, down from the 1/1.28" sensor used in the iPhone 16...
Friday January 10, 2025 9:20 am PST by Joe Rossignol
Apple is widely rumored to be planning a new iPhone SE, and multiple sources lately have commented on the device's launch timing.
The latest word comes from Apple supply chain analyst Ming-Chi Kuo. In a blog post today, he said the device will be released around the middle of the first half of 2025. In other words, around the quarter mark of 2025. That means the next iPhone SE will likely be ...
Thursday January 9, 2025 3:42 pm PST by Juli Clover
If you've been hearing a chiming sound from your AirPods Pro 2 case when the AirPods are charging, it's a feature that Apple added with the launch of Hearing Health last year.
In a support guide, Apple says that the AirPods Pro may play a sound every so often while in the case to ensure the microphones and speakers are working as intended. From Apple:
To help ensure that your AirPods...
Friday January 10, 2025 11:34 am PST by Joe Rossignol
Synchrony is now available as a buy-now, pay-later option when checking out with Apple Pay online and in apps on iPhone and iPad.
Synchrony was added to a list of Apple Pay installment providers in the U.S. in an Apple support document that was updated today, joining Affirm and Klarna. The addition was spotted by MacRumors contributor Aaron Perris.
iOS 18 and iPadOS 18 users can select...
Wednesday January 8, 2025 7:05 am PST by Tim Hardwick
Despite being released over two years ago, Apple's AirPods Pro 2 continue to dominate the wireless earbud market. However, with the AirPods Pro 3 expected to launch sometime in 2025, anyone thinking of buying Apple's premium earbuds may be wondering if the next generation is worth holding out for.
Apart from their audio and noise-canceling performance, which are generally regarded as...
Wait what? The ECG only works when your finger is on the Digital Crown. It can’t work in the background.
The background irregular heart rhythm detection does not use the ECG but it is grouped with the ECG features (which is technically inaccurate but they are related features, just different technologies). It's been around as long as the ECG: "Using the optical heart sensor in Apple Watch Series 1 or later, the irregular rhythm notification feature will occasionally check the user’s heart rhythm in the background for signs of an irregular heart rhythm that appears to be AFib and alerts the user with a notification if an irregular rhythm is detected on five rhythm checks over a minimum of 65 minutes." (https://www.apple.com/newsroom/2018/12/ecg-app-and-irregular-heart-rhythm-notification-available-today-on-apple-watch/)
Still waiting for ECG in Japan! Any news about it?
Since ECG received final medical approval in Japan this September, I guess maybe iOS 14.3 will cover ECG functionality also Japan as well? *finger-crossed*
