Masimo has announced that its MightySat fingertip pulse oximeter can now be purchased from Apple.com and select Apple retail locations in the U.S. and Canada.

masimo-mightysat
The pulse oximeter provides noninvasive measurements of oxygen saturation, pulse rate, and perfusion index, allegedly with greater accuracy than over a dozen other hospital-grade pulse oximeters.

In a study of 70 healthy volunteers during conditions of movement and low blood flow, Masimo SET was the most accurate pulse oximeter when compared to 19 other hospital-grade pulse oximeters. SpO2 accuracy was defined as being within 7% of the reference value and pulse rate accuracy as being within 10%.

The measurements and trends are sent to iPhone or iPad via Bluetooth LE and stored in the Masimo Personal Health app available in the App Store, while the data can also be shared with Apple's official Health app if permission is granted.

MightySat is $299, while a premium version that also measures respiration rate and pleth variability index is available for $399.

Top Rated Comments

keysofanxiety Avatar
120 months ago
I am still waiting for the cloaking device to appear on kickstarter...
I'm just waiting for the holodeck with Seven of Nine as DLC :D :oops:
Score: 4 Votes (Like | Disagree)
CarpalMac Avatar
120 months ago
I've always thought that Star Trek gives us the vision and human ingenuity will eventually give us the means.
I am still waiting for the cloaking device to appear on kickstarter...
Score: 3 Votes (Like | Disagree)
Scottsoapbox Avatar
120 months ago
This is $18 on Amazon if you're willing to read the numbers on the device instead of your iPhone...
Score: 2 Votes (Like | Disagree)
JeffyTheQuik Avatar
120 months ago
I'd like to see Foreflight and other aviation EFB's be able to display this info on screen. For me, having this, along with blood sugar on 2-3 second intervals, with color coding would be good for pilots.

And, if you think 7% error is bad for an Oximeter, you should see the error rates for blood glucose strips...


How accurate is your blood glucose meter?

A major study found that almost half of meters do not meet the minimum required standards:


* For blood sugars over 75 mg (4.2 mmol): Accurate within 20%. For example, if your blood sugar is 200 mg (11 mmol), the meter must read between 160 (8.8 mmol) and 240 (13.3 mmol) at least 95% of the time.
* For blood sugars under 75 mg (4.2 mmol): Accurate within 15 mg. For example, if your blood sugar is 60 mg (3.3 mmol), the meter must read between 45 (2.5 mmol) and 75 (4.2 mmol) at least 95% of the time.

There is a new proposal that would require all results to be within 15%
Yep... if you're at 75, you could be at 65 mg/dl or 90 mg/dl, but honestly, for me, they're pretty tight, not at the extremes. It's just the panic of the OMG! These can be off and KILL YOU!
Score: 2 Votes (Like | Disagree)
Keane16 Avatar
120 months ago
Uh you don't need bluetooth if your not using your phone.

This is the one used by my doctor's office:
https://www.amazon.com/AccuMed®-CMS-50DL-Oximeter-Carrying-Landyard/dp/B00MNRSWJE/ref=sr_1_3?ie=UTF8&qid=1473169572&sr=8-3&keywords=pulse+oximeter ('https://www.amazon.com/AccuMed%C2%AE-CMS-50DL-Oximeter-Carrying-Landyard/dp/B00MNRSWJE/ref=sr_1_3?ie=UTF8&qid=1473169572&sr=8-3&keywords=pulse%2Boximeter')
Thanks. Just the bog standard readers we have currently.

It would be nice to have things automatically logged to your phone/tablet/desktop with graphs created on the fly to spot trends, rather than taking manual readings. Especially if taking readings is a regular occurrence.

The Masimo is certainly pricey, but for those that need it could be worth it.
Score: 1 Votes (Like | Disagree)
smithrh Avatar
120 months ago
The Apple Watch already has a pulse oximeter, but it's not enabled, likely because of the huge delay/effort needed for FDA approval.

https://9to5mac.com/2015/04/24/apple-watch-blood-oxygen/

The FDA's not wrong to test and regulate vital medical devices, and Apple certainly could not delay EVERY Apple Watch generation over that one feature. But it's a shame it can't happen quicker.
Top of the wrist is not a great place for gathering SpO2 data through reflectance, which I suspect Apple found out. Yes, it appears that there are some extra LEDs and sensors in there, but that alone doesn't make a pulse oximeter.

So, I wouldn't jump on the FDA. Nor is the FDA approval process all that horrible.

Source: I worked on SpO2 devices when they were first coming out, participated in FDA data collection and clinicals. There's a reason why the fingertip sensors are still dominant - they work.
Score: 1 Votes (Like | Disagree)

Popular Stories

streaming black friday 2025

Black Friday Streaming Deals Include Big Savings on Disney+, Hulu, Apple TV, and More

Monday November 24, 2025 8:03 am PST by
We've been focusing on deals on physical products over the past few weeks, but Black Friday is also a great time of year to purchase a streaming membership. Some of the biggest services have great discounts for new and select returning members this week, including Disney+, Hulu, Paramount+, Peacock, and more. Note: MacRumors is an affiliate partner with some of these vendors. When you click a...
Apple Foldable Thumb

Foldable iPhone to Debut These Three Breakthrough Features

Tuesday November 25, 2025 7:09 am PST by
Apple's first foldable iPhone is expected to launch alongside the iPhone 18 Pro models in fall 2026, and it's shaping up to include three standout features that could set it apart from the competition. The book-style foldable will reportedly feature an industry-first 24-megapixel under-display camera built into the inner display, according to a recent JP Morgan equity research report. That...
General Black Friday Deals 25 Red

Apple Black Friday Deals Available Now on AirPods, iPads, Accessories, and More

Friday November 21, 2025 8:48 am PST by
We're only a few days away from Black Friday, which will take place on Friday, November 28 in 2025. As always, this will be the best time of the year to shop for great deals, including popular Apple products like AirPods, iPad, Apple Watch, and more. In this article, the majority of the discounts will be found on Amazon. Note: MacRumors is an affiliate partner with some of these vendors. When...
General Apps Messages Redux

Singapore Orders Changes to iMessage by December

Tuesday November 25, 2025 6:39 am PST by
Singapore has ordered Apple to block or filter messages on iMessage that impersonate government agencies, requiring the company to implement new anti-spoofing protections by December as part of efforts to curb rising online scams, the Straits Times reports. Singapore's Ministry of Home Affairs (MHA) said that it had issued an Implementation Directive to Apple under the Online Criminal Harms...
iPhone Pocket Short

iPhone Pocket is Now Completely Sold Out Worldwide

Tuesday November 25, 2025 7:16 am PST by
Apple recently teamed up with Japanese fashion brand ISSEY MIYAKE to create the iPhone Pocket, a limited-edition knitted accessory designed to carry an iPhone. However, it is now completely sold out in all countries where it was released. iPhone Pocket became available to order on Apple's online store starting Friday, November 14, in the United States, France, China, Italy, Japan, Singapore, ...
maxresdefault

The MacRumors Show: iPhone 18 Pro Looks Like a Huge Upgrade

Friday November 21, 2025 9:10 am PST by
On this week's episode of The MacRumors Show, we talk through all of the new features and improvements expected to come to next year's iPhone 18 Pro and iPhone 18 Pro Max models. Subscribe to The MacRumors Show YouTube channel for more videos Apple's next-generation iPhones are less than ten months away and we already have a good idea about what to expect based on corroborated leaks, rumors,...
iOS 26

iOS 26.2 Adds These New Features to Your iPhone

Thursday November 20, 2025 10:50 am PST by
iOS 26.2 is currently in beta testing. The upcoming update includes a handful of new features and changes on the iPhone, including a new Liquid Glass slider for the Lock Screen's clock, offline lyrics for Apple Music, and more. In a recent press release, Apple confirmed that iOS 26.2 will be released to all users in December, but it did not provide a specific release date. Keep reading...
iOS 26 on Three iPhones

iOS 27 Will Reportedly Have Two Key Upgrades

Sunday November 23, 2025 8:48 am PST by
iOS 27 will reportedly have two major elements: quality improvements and new AI features. In his Power On newsletter today, Bloomberg's Mark Gurman said that iOS 27 will be similar to Mac OS X Snow Leopard, in the sense that Apple is focused on improving "quality and underlying performance" over adding new features. Gurman said there is one exception to this rule, though, as he expects...
apple news banner

Apple News Loses CNN

Monday November 24, 2025 7:56 am PST by
American multinational news company CNN has abruptly pulled its content from Apple News, Semafor reports. CNN quietly removed its stories from Apple News over the weekend and there is no longer a feed from the network to subscribe to in the app. This effectively ends its distribution agreement with Apple while the two sides negotiate new terms. Discussions are apparently ongoing and CNN's...