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(Credit: Josh Miller/CNET)

The 2018 Apple Event unveiled four new devices coming for iOS users. This fall, users can experience the new iPhone XS, the iPhone XS Max, the iPhone XR, and the new Apple Watch Series 4.

Apple promoted a wide range of aesthetic and functional product improvements. Here are the main app takeaways for the new devices:

1. New ECG app on Apple Watch

The Apple Watch Series 4, dubbed by Apple as the "ultimate guardian for your health," can now detect if your heart rate is too low. Alternatively, if the watch detects an irregular heart rhythm, the system can check for Atrial fibrillation (AFib).

The new watch can also run an electrocardiogram anytime, anywhere. Getting a result is as easy as touching the side of the watch for 30 seconds to get a heart rhythm classification. The result is stored in the health app to share later with your doctor.

These features have already gained FDA approval to be used as a health record. Dr. Ivor Benjamin, President of the American Heart Association, called the new real-time assessment features "game-changing."

"People report symptoms that are absent when they see the doctor," Benjamin told the crowd. "Capturing meaningful data about someone's heart in real time is going to change the way we practice medicine."

In addition to working towards better heart health, the Apple Watch S4 is trying to keep users safer. The watch also includes a new feature that detects if you've fallen. If you fall, the watch delivers an alert checking if you're okay. If you remain immobile for one minute, the watch automatically calls for help and sends your location to the emergency service.

2. 30% faster app performance on iPhone

All three new iPhones include an A12 Bionic chip, Apple's first seven nanometer processor. Apple claimed that apps will run 30 percent faster than 2017 iPhones. The A12 provides an upgrade from 600 billion processes per second to 5 trillion processes per second, said Phil Schiller, Apple senior vice president of marketing.

That should mean you'll be able to multitask better and launch apps faster.

There's also a storage upgrade. The original iPhone X only gave you the choice of 64GB or 256GB. With the iPhone XS and XS Max, you can pick between 64GB, 256GB, or 512GB. On the less expensive iPhone XR, the options are 64GB, 128GB, or 256GB.

SEE: iPhone XS, XS Max, XR: Apple's three new iPhones start at $749, $999, $1099

3. Smart HDR and neural-powered photos

Apple announced that it's using real-time machine learning to improve their camera. While the hardware specs of the iPhone XS and XS Max are similar to those of the original iPhone X, the new A12 Bionic chip boosts the iPhone's capability to use software to automatically improve your photos.

When you click the virtual shutter, the camera's algorithm now works to detect faces and bodies and understand the scene to optimize the image you take. The camera also features Smart HDR with zero shutter lag and a four-frame buffer. Basically, instead of just one photo, the new iPhones will take almost 12 frames to get the perfect photo by filling in the highlights and shadows and providing greater dynamic range.

Portrait mode, a favorite iOS feature, has been upgraded with advanced bokeh and Depth Control. After you take a photo in portrait mode, you can control whether the background is blurred or in focus. All the editing is done in the photo app with a slider.

The algorithm applies to capturing video as well. Taking video on the new iPhones have improved color, higher definition capabilities, stereo sound, tone, and more.

4.Next generation AR and games

The mobile gaming experience will also improve with Apple's installment of the A12 Bionic chip, as the iPhone continues its evolution from casual games like Angry Birds and Words with Friends to more intense experiences with advanced graphics.

Bethesda Softworks designer Todd Howard said gamers can experience a higher-end console-like experience on the new devices. Howard showed off The Elder Scrolls: Blades on the iPhone XS display.

Howard remarked on the light enhancement details, surface textures, light reflecting off the character's weapon, and more. The game runs 40 percent faster than it did on previous iOS devices.

David Lee, CEO of Nex Team, showed the Homecourt app (iOS, Android) and CEO of Directive Games, Alti Marr, demonstrated the Arcade Cabinet AR experience on iPhone XS.

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Shelby is an Associate Writer for CNET's Download.com. She served as Editor in Chief for the Louisville Cardinal newspaper at the University of Louisville. She interned as Creative Non-Fiction Editor for Miracle Monocle literary magazine. Her work appears in Glass Mountain Magazine, Bookends Review, Soundings East, and on Louisville.com. Her cat, Puck, is the best cat ever.