ios_8_iconApple today began sending out emails to developers, reminding them that as of February 1, 2015, all apps submitted to the App Store need to be built with the iOS 8 software development kit and include 64-bit support. Developers were first informed of the upcoming rules back in October, after the release of iOS 8 and the iPhone 6/6 Plus.

The email also states that as of June 1, 2015, all app updates submitted to the App Store will need to adhere to the same requirements, giving the company a way to make sure all current apps take advantage of 64-bit support and are iOS 8 compliant. The shift to across-the-board 64-bit support will offer improved app performance on 64-bit devices.

Dear Developer,
As we announced in October, beginning February 1, 2015 new iOS apps submitted to the App Store must include 64-bit support and be built with the iOS 8 SDK. Beginning June 1, 2015 app updates will also need to follow the same requirements. To enable 64-bit in your project, we recommend using the default Xcode build setting of "Standard architectures" to build a single binary with both 32-bit and 64-bit code.

Apple first began asking developers to submit 64-bit apps following the September 2013 release of the iPhone 5s, which introduced the 64-bit A7 processor. All of Apple’s newest devices, including the iPhone 6, iPhone 6 Plus, iPad Air 2, and iPad mini 3 offer 64-bit processors, as does the iPad mini 2 and the original iPad Air.

At the current time, developers are still permitted to submit 32-bit apps along with universal binaries, but that option will expire when February rolls around.

Top Rated Comments

Eminemdrdre00 Avatar
83 months ago
They should be required to support the iPhone 6/6 Plus screen size too!
Score: 10 Votes (Like | Disagree)
Traverse Avatar
83 months ago
You can still find apps that haven't been updated since 2010 or 2011. Apple needs to do a better job at pruning the App Store. That 1.3 million app figure is pretty pointless when 500,000 of them are crap anyway.
Score: 6 Votes (Like | Disagree)
Xenomorph Avatar
83 months ago
A lot of people seem to be overreacting.

Apple cuts off old versions of Xcode all the time. This move doesn't exclude any more devices than any other Xcode cut-offs in the past.

Requiring 64-bit binaries does not exclude 32-bit binaries. Both binaries are included. Most of an app's size is not from the binary, but from other resources such as graphics or audio. A 10.25 MB download might jump to 10.75 MB.

Devices this new requirement will help:
* iPhone 5S
* iPhone 6
* iPhone 6 Plus
* iPad Air
* iPad mini 2
* iPad Air 2
* iPad mini 3

Device this new requirement will harm:
* none


A 64-bit device running a 64-bit app may end up with more available memory for that app since it does not have to load 32-bit libraries in addition to 64-bit libraries. Understand? Compiling with 64-bit support can make an old app run better.


OS X applications already included 32/64-bit binaries. In fact, many applications had both the PowerPC/Intel binaries ("Universal" binaries). No one complained then.

Apple isn't the only company that does this. Microsoft .NET compiles apps with native 32/64-bit support as well.
Score: 4 Votes (Like | Disagree)
Michael Goff Avatar
83 months ago
Yes, but there are clearly a multitude of apps no longer supported that have longs since lost their usefulness. Eventually an OS update will break even the good ones. Apple needs a way of, as you put it, flushing out those apps.

Why would they do that, though? They need to be able to say that you can access eleventy million apps because their OS is the best.
Score: 4 Votes (Like | Disagree)
waterskier2007 Avatar
83 months ago
32-bit users automatically get a 64-bit copy of the code that is of no use to them

64-bit users automatically get a 32-bit copy of the code that is of no use to them

Apple needs to find a better solution. Force developers to submit two separate copies of apps.
From what I know, this is not really true at all.

Much of the space that apps take up is images, icons, and resources. Those are universal and the app bundle only contains one copy of those files regardless of 32/64 bit.
Score: 4 Votes (Like | Disagree)
Nicksd84 Avatar
83 months ago
Good thing there's that additional RAM for 64 bit apps to take advantage of... just kidding.
Score: 4 Votes (Like | Disagree)

Top Stories

apple event spring loaded

Apple's 'Spring Loaded' Event Officially Announced for Tuesday, April 20

Tuesday April 13, 2021 9:04 am PDT by
Following an overnight leak by Siri, Apple today officially announced that it will be holding a special "Spring Loaded" event on Tuesday, April 20 at 10:00 a.m. Pacific Time at the Steve Jobs Theater on the Apple Park campus in Cupertino, California. As with all of Apple's 2020 events, the April 2021 event will be a digital-only gathering with no members of the media invited to attend in...
iphone12cameras

Kuo: 2022 iPhones to Feature 48-Megapixel Camera, 8K Video, and 6.1 and 6.7" Sizes With No 5.4" Mini Option

Tuesday April 13, 2021 10:45 pm PDT by
The upcoming 2022 iPhone lineup will feature two 6.1-inch devices and two 6.7-inch devices, with no mini-sized 5.4-inch iPhone, well-respected Apple analyst Ming-Chi Kuo said in a note to investors that was seen by MacRumors. Two of the iPhones will be high-end models and two of the iPhones will be lower-end models, similar to the current iPhone 12 lineup. Apple introduced the 5.4-inch...
macos catalina serial number

Apple Preparing Rollout of New Randomized Product Serial Numbers Ahead of 'Spring Loaded' Event

Wednesday April 14, 2021 2:08 am PDT by
Apple is advising its authorized premium resellers and dealers to prepare for new products with 10 and 12 digital serial numbers, days ahead of when it's expected to reveal a slew of new products. MacRumors previously reported that Apple plans to switch to randomized serial numbers for future products starting in early 2021. The company now seems to be preparing for that roll-out, telling...
apple event particularly innovative article

Gurman: Apple's 'Spring Loaded' Event Won't Feature Anything 'Particularly Innovative'

Thursday April 15, 2021 1:30 am PDT by
Bloomberg's highly-respected Mark Gurman says that he expects nothing "particularly innovative" or "extraordinary" to launch at Apple's "Spring Loaded" event next week, Tuesday, April 20. Gurman made the remarks during an interview for Bloomberg Technology, in which he reaffirmed that Apple will launch a new 11-inch and 12.9-inch iPad Pro, with the higher-end model featuring a brand new...
duanrui iphone13 notch samples

More Leaked iPhone 13 Samples Show Smaller Notch, Repositioned Earpiece and Front Camera

Wednesday April 14, 2021 1:06 am PDT by
Leaker known as "DuanRui" has today shared an image of two iPhone 13 "film samples," which show the same rumored smaller notch design coming to the iPhone 13 series that we've seen from other sources. In past tweets, DuanRui has accurately leaked the correct names of the iPhone 12 models and an iPad Air 4 manual revealing its new design, so there's good reason to think this leak is credible, ...
siir apple event april 20

Siri Reveals Apple Event Planned for Tuesday, April 20

Tuesday April 13, 2021 12:04 am PDT by
Siri has apparently prematurely revealed that Apple plans to hold an event on Tuesday, April 20, where the company is expected to reveal brand new iPad Pro models and possibly its long-awaited AirTags trackers. Subscribe to the MacRumors YouTube channel for more videos. Upon being asked "When is the next Apple Event," Siri is currently responding with, "The special event is on Tuesday, April...
apple event hashflag

Twitter Hashflag for April 20 Apple Event Goes Live

Tuesday April 13, 2021 2:21 pm PDT by
Following the overnight Siri leak and subsequent announcement that Apple will hold a media event on Tuesday, April 20, a new Twitter hashflag has appeared to help provide visibility for the event on the platform. For the last several recent events, Apple has utilized hashflags, which are little icons next to hashtags on Twitter, as a way to market its events. The company first started the...
parallels windows 10 arm mac

Parallels 16.5 Can Virtualize ARM Windows Natively on M1 Macs With Up to 30% Faster Performance

Wednesday April 14, 2021 7:00 am PDT by
Parallels today announced the release of Parallels Desktop 16.5 for Mac with full support for M1 Macs, allowing for the Windows 10 ARM Insider Preview and ARM-based Linux distributions to be run in a virtual machine at native speeds on M1 Macs. Parallels says running a Windows 10 ARM Insider Preview virtual machine natively on an M1 Mac results in up to 30 percent better performance compared ...
iphone 13 pro render rear

iPhone 13 Pro Rumored to Be Thicker and Feature Larger Rear Camera System

Wednesday April 14, 2021 7:07 am PDT by
Tech blog 91Mobiles has obtained 3D renders of what it claims will be the iPhone 13 Pro, revealing a largely familiar design with a few notable changes, including a smaller notch and a significantly larger rear camera system. Following renders of the standard iPhone 13 model from MySmartPrice yesterday, which showed a new diagonal rear camera layout, these renders of the 6.1-inch iPhone 13...
third gen Apple pencil leaked video

Video of Alleged Third-Generation Apple Pencil Leaks Ahead of Apple Event

Friday April 16, 2021 6:13 am PDT by
A video purporting to be of the third-generation Apple Pencil has today been shared online, showing a glossy finish that mirrors previous leaks. New ✏️ ready to 🚢 #AppleEvent @TommyBo50387266 pic.twitter.com/s4RCDwDi5M— 漢尼斯·拉斯納 🇨🇳 (@ileakeer) April 16, 2021 The brief video from Twitter account @ileakeer, spotted by 9to5Mac, shows an Apple Pencil with a glossy finish much like the...