iOS 10.1 Reinstates 32-Bit App Alert, Warns Older Apps May Slow iPhone

During the iOS 10 beta testing period, Apple added an alert message to notify users who downloaded an older 32-bit app that it could affect system performance, but the warning message does not appear to have made it into the final version of iOS 10 that was released to the public.

Starting in iOS 10.1, Apple is reinstating the warning message, with a more dire alert that will likely steer customers away from apps that have not complied with Apple's 2015 mandate stating all apps must be 64-bit. As can be seen in the alert below, the message now warns that an app "may slow down your iPhone." It goes on to say "The developer of this app needs to update it to improve its compatibility."

peggle
During the iOS 10 beta testing period, the alert instead warned 32-bit apps were "not optimized for iOS 10" and usage "may affect overall system performance."

Starting in late 2013, Apple began asking developers to submit 64-bit apps for the iPhone 5s, the first iPhone with a 64-bit processor. On February 1, 2015, Apple made 64-bit support mandatory for all new app submissions, and on June 1, 2015, all app updates submitted were required to include 64-bit support.

Apps that are popping up warnings in the iOS 10.1 beta are apps that have not been updated since that time.

Apple has likely reinstated the 32-bit alert message as part of its crackdown on older, outdated apps to clean up the App Store. In early September, Apple notified developers about an upcoming plan to remove apps that have not received compatibility updates, do not comply with current review guidelines, or that no longer function as intended.

Notices started going out on September 7, with developers given a 30 day period to fix problematic apps. After that period, Apple will be removing outdated apps from the App Store.

Top Rated Comments

Andres Cantu Avatar
54 months ago
Good. No reason why apps should not be 64-bit compatible. It's been three years.

While we're at it, all apps should be optimized for all resolutions as well.
Score: 27 Votes (Like | Disagree)
Tubamajuba Avatar
54 months ago

It just works.. oh wait!

It works infinitely better than your useless comment does.
Score: 21 Votes (Like | Disagree)
weup togo Avatar
54 months ago
64-bit aside, don't play into Apple's spin that an app that hasn't been updated in a year is "outdated." This is a poisonous concept designed to screw users and developers alike by constantly driving churn on the app store. There were games written 30 years ago that still worked in Classic.

Apple is supposed to be a platform vendor. Platforms are supposed to be stable. But instead they're successfully convincing the apologists that only new things are good, and every not new thing is bad. Customers who buy into this are only hurting themselves.
Score: 20 Votes (Like | Disagree)
weup togo Avatar
54 months ago


Also the message is too vague. Will the app run poorly, or will it somehow drag down the performance of the whole phone?

The message is deliberately vague. Marketing fine tunes the wording of these dialogs to perfection. They are trying to scare users into being angry at developers.

Apple Engineering benefits when every app is recompiled every year on the newest SDK because it guarantees adoption of all sorts of behaviors that apps are opted into automatically. As long as there is this long tail of apps compiled with older tools against older SDKs, Apple has to choose between maintaining backward compatibility with older implementations and breaking apps outright. They have no problem breaking apps here and there, but they don't have the courage yet to do it outright for large classes of popular apps.

They know from usage metrics that there are still too many people using apps like Peggle for them to get away with outright breaking them, because the mainstream press would take notice. So instead they resort to FUD alerts designed to confuse and frighten users into abandoning their favorite old apps, and shaming developers into diverting their effort into changes for apps that are no longer profitable. It's an ugly scene, and everyone is being played.
Score: 13 Votes (Like | Disagree)
WestonHarvey1 Avatar
54 months ago
It will slow your entire phone down? Or just perform poorly while it is running? That message is pretty dire.
Score: 10 Votes (Like | Disagree)
LordQ Avatar
54 months ago
Good. When are they removing legacy apps from the App Store?
Score: 10 Votes (Like | Disagree)

Top Stories

Apple Watc black friday 20 sale feature

Apple Black Friday 2020: Best Apple Watch Deals [Updated]

Wednesday November 25, 2020 4:01 pm PST by
Black Friday sales have begun on a variety of products, including the Apple Watch. There are quite a few deals across the Apple Watch lineup this year, including one of the lowest price we've ever seen the Apple Watch Series 3. Note: MacRumors is an affiliate partner with some of these vendors. When you click a link and make a purchase, we may receive a small payment, which helps us keep the...
AirPods Pro black friday 20 sale feature 2

Black Friday 2020: AirPods Pro Reach Lowest Price Ever [Updated]

Wednesday November 25, 2020 3:22 pm PST by
Black Friday has kicked off this week, and one of the first major sales for the AirPods Pro is available right now on Walmart. You can find this deal below, along with a few other solid discounts on the regular AirPods. Note: MacRumors is an affiliate partner with some of these vendors. When you click a link and make a purchase, we may receive a small payment, which helps us keep the site...
windows 10

Developer Successfully Virtualizes Windows for Arm on M1 Mac

Friday November 27, 2020 7:16 am PST by
Developer Alexander Graf has successfully virtualized the Arm version of Windows on an M1 Mac, proving that the M1 chip is capable of running Microsoft's operating system (via The 8-Bit). Currently, Macs with the M1 chip do not support Windows and there is no Boot Camp feature as there is on Intel Macs, but support for Windows is a feature that many users would like to see. Using the...
General black friday 20 sale feature

Thanksgiving Day Deals Still Available on AirPods, M1 Macs, Apple Watch Series 6, iPads

Thursday November 26, 2020 10:21 am PST by
Black Friday deals seem to start earlier and earlier every year, so there were already a wide variety of discounts available for Apple products on Thanksgiving Day. Many of the deals remain available even after Thanksgiving, but act fast, as inventory quickly fluctuates. Thanksgiving Day Deals on Apple Products — Still Available:AirPods with a wireless charging case remain available for...
iPhone black friday 20 sale feature

Apple Black Friday 2020: Best iPhone Deals

Friday November 27, 2020 12:56 pm PST by
Black Friday is halfway done, but there are still a few deals to shop for on iPhones at carriers like AT&T, Verizon, and T-Mobile/Sprint. Note: MacRumors is an affiliate partner with some of these vendors. When you click a link and make a purchase, we may receive a small payment, which helps us keep the site running. AT&T Starting with AT&T, you'll find up to $700 off any iPhone 12 when...
13 16 inch macbook pro air trio

Reliable Leaker Suggests Redesigned MacBooks in 2021 Will Include Both Apple Silicon and Intel Models

Wednesday November 25, 2020 9:15 am PST by
Reliable leaker known as "L0vetodream" has today suggested on Twitter that redesigned MacBooks coming in the second half of 2021 will include models with both Apple Silicon chips and Intel processors. The brief Tweet came in response to a MacRumors article from earlier today, which outlined a report from Ming-Chi Kuo claiming that Apple plans to release redesigned MacBook models with Apple ...
iphone trade in store

UK Environmental Committee Says Apple Contributing to 'Throwaway Culture' of 'Short-Lived Products'

Thursday November 26, 2020 7:07 am PST by
Technology companies like Apple are contributing to e-waste by making their products difficult to repair, and charging expensive repair fees, according to a lengthy report published today by the UK Parliament's Environmental Audit Committee. "We were told that Apple glues and solders parts together on their laptops, which makes repairing them very difficult," the Committee wrote in a summary ...
m1 chip macbook air pro

Kuo: Redesigned MacBooks With Apple Silicon to Launch in Second Half of 2021

Tuesday November 24, 2020 7:53 pm PST by
Apple plans to release additional MacBook models with Apple Silicon in the second half of 2021, according to analyst Ming-Chi Kuo, as part of the company's two-year transition away from Intel processors across its Mac lineup. In a research note today, obtained by MacRumors, Kuo said that these MacBook models will feature a new design. Kuo did not specify which models these will be, but he...
mac mini macbook pro macbook air

Apple M1 Hands-On Comparison: MacBook Air vs. MacBook Pro vs. Mac Mini

Monday November 23, 2020 3:40 pm PST by
Apple's M1 Macs are out in the wild now, but ahead of the holidays, you might still be trying to figure out which one to pick up, either for yourself or as a gift for someone else. We've got all three of the new Macs available, so we thought we'd give MacRumors readers a hands-on overview of each machine in our latest YouTube video. Subscribe to the MacRumors YouTube channel for more videos. ...
iPad Pro 5G and Mini LED feature

Rumored 2021 High-End iPad Pro May Feature 5G With mmWave Support

Thursday November 26, 2020 2:14 am PST by
Apple's rumored high-end iPad Pro models to be released next year will be 5G-enabled with mmWave support, according to sources cited by industry publication DigiTimes. Multiple rumors have suggested Apple is planning to release a high-end 12.9-inch iPad Pro with a mini-LED display next year, with the possibility that there will be an 11-inch mini-LED model too, but details beyond that have...