Apple offers developers workaround for app RAM limits in iOS 15, iPadOS 15 | AppleInsider

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Beta versions of iOS 15 and iPadOS 15 now give developers the option of requesting more RAM than the current 5GB maximum per app, with limitations.

Apple has always set a cap on how much RAM any one app can use on the iPad, but it’s become more of an issue as the devices themselves physically include more. Even on an M1 iPad Pro with the current maximum 16GB RAM, apps have been limited to around 5GB each.

Now a new developer note regarding the beta releases of iOS 15 and iPadOS 15 says that apps may request more RAM. It’s done via a setting that seemingly does not let the apps specify how much more RAM they want, and Apple cautions that the feature will not be available on every iPad or iPhone.

“[It is a] Boolean value that indicates whether core features of your app may perform better with a higher memory limit on supported devices,” says Apple. “If you use this entitlement, make sure your app still behaves correctly if additional memory isn’t available.”

Additional RAM may not be granted to a requesting app, based on total device capacity, or other apps using that RAM.

Apple provides a check that developers can use “to determine the amount of memory available.” Perhaps giving a clue to why Apple imposes limits in the first place, the company also cautions that, “higher memory use can affect system performance.”

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