watchOS 4 introduces an expanded Heart Rate app that's able to track your current heart rate, your resting heart rate, average heart rate while walking, and your recovery rate after exercising, providing more information about your overall health. It's also able to send alerts if it detects a heart rate above 120 when you're not exercising.
These features are available on the new Apple Watch Series 3 models and the Apple Watch Series 2 and Series 1 models that were introduced in 2016, but some of the features are not available original Apple Watch models sold in 2015.
As Twitter users discovered after downloading watchOS 4 earlier this week, the original Apple Watch is only able to display current heart rate with a much simpler interface for the heart rate app, with no sign of resting heart rate or average walking heart rate. The app does offer the heart rate graph with a tap on the display, though.
It's not entirely clear why the original Apple Watch doesn't offer the full range of heart rate features, but it may be due to hardware limitations. The first Apple Watch offers an original S1 processor, which has since been significantly upgraded in Series 1, Series 2, and Series 3 updates, and its battery life is not as robust.
Apple discontinued the original Apple Watch in 2016 when the Series 2 was introduced, replacing it with the Series 1 Apple Watch. The Series 1 model is similar to the original Apple Watch, but features an upgraded S1P processor. The Series 2 Apple Watch uses an S2 processor, and the Series 3 Apple Watch uses an S3 processor.
Monday December 22, 2025 11:30 am PST by Juli Clover
Apple hasn't updated the Apple TV 4K since 2022, and 2025 was supposed to be the year that we got a refresh. There were rumors suggesting Apple would release the new Apple TV before the end of 2025, but it looks like that's not going to happen now.
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Bloomberg's Mark Gurman said several times across 2024 and 2025 that Apple would...
Tuesday December 23, 2025 8:36 am PST by Joe Rossignol
While the iPhone 18 Pro and iPhone 18 Pro Max are not expected to launch for another nine months, there are already plenty of rumors about the devices.
Below, we have recapped 12 features rumored for the iPhone 18 Pro models.
The same overall design is expected, with 6.3-inch and 6.9-inch display sizes, and a "plateau" housing three rear cameras
Under-screen Face ID
Front camera in...
Tuesday December 30, 2025 2:11 pm PST by Juli Clover
The Apple Fitness+ Instagram account today teased that the service has "big plans" for 2026. In a video, several Apple Fitness+ trainers are shown holding up newspapers with headlines related to Apple Fitness+.
What's Apple Fitness+ Planning for the New Year?
Something Big is Coming to Apple Fitness+
The Countdown Begins. Apple Fitness+ 2026 is Almost Here
2026 Plans Still Under ...
Apple's restrained artificial intelligence strategy may pay off in 2026 amid the arrival of a revamped Siri and concerns around the AI market "bubble" bursting, The Information argues.
The speculative report notes that Apple has taken a restrained approach with AI innovations compared with peers such as OpenAI, Google, and Meta, which are investing hundreds of billions of dollars in data...
Monday December 29, 2025 10:55 am PST by Juli Clover
Apple is rumored to be introducing a foldable iPhone in September 2026, and since it will bring the biggest form factor change since the iPhone was introduced in 2007, curiosity about the design is high. A 3D designer created an iPhone Fold design based on rumors, and we printed it out to see how it compares to Apple's current iPhones.
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Monday December 22, 2025 8:47 am PST by Joe Rossignol
Earlier this month, Apple released iOS 26.2, following more than a month of beta testing. It is a big update, with many new features and changes for iPhones.
iOS 26.2 adds a Liquid Glass slider for the Lock Screen's clock, offline lyrics in Apple Music, and more. Below, we have highlighted a total of eight new features.
Liquid Glass Slider on Lock Screen
A new slider in the Lock...
Tuesday December 30, 2025 10:39 am PST by Juli Clover
iPhone 17 Pro and Pro Max owners are having trouble with the speakers of their devices, and have complained about a static or hissing noise that occurs when the iPhone is charging.
There are multiple discussions about the issue on Reddit, the MacRumors forums, and Apple's Support Community, where affected users say there is a noticeable static noise "like an old radio." Some people report...
Apple reportedly tested a version of the first-generation AirPods with bright, iPhone 5c-like colored charging cases.
The images, shared by the Apple leaker and prototype collector known as "Kosutami," claim to show first-generation AirPods prototypes with pink and yellow exterior casings. The interior of the charging case and the earbuds themselves remain white.
They seem close to some...
Ugh Apple, seriously? I’m an owner of the stainless steel 1st gen Apple Watch and I’m not looking for an upgrade yet since it’s in a pretty good condition. Why should my watch not get the watchOS 4 features if my watch’s hardware is practically identical to Apple Watch Series 1 except for the faster processor. Ridiculous!
I would rather have Apple remove other useless features like ToyStory Watch faces and let me use a feature that I was actually looking forward to.
Ugh Apple, seriously? I’m an owner of the stainless steel 1st gen Apple Watch and I’m not looking for an upgrade yet since it’s in a pretty good condition. Why should my watch not get the watchOS 4 features if my watch’s hardware is practically identical to Apple Watch Series 1 except for the faster processor. Ridiculous!
I would rather have Apple remove other useless features like ToyStory Watch faces and let me use a feature that I was actually looking forward to.
A faster more efficient processor makes a huge difference. I wouldn’t call that “practically the same”.
It’s not where I’m getting at. It’s a very capable device which is why it annoys me that it gets undercut. There is no reason for them to do that except for forcing the customer to upgrade.
Wouldn't leaving it off of watchOS 4 entirely be an even better way to "force the customer to upgrade"?
Yeah, so click that UI element right there and you’ll get the expanded graph. I have an OG Watch and it shows the graph. The only thing missing is the resting heart rate.
Same thing here. I also have the original Apple Watch and it seems to show the graph. See below....
